diff --git a/data/interfaces/default/settings.html b/data/interfaces/default/settings.html
index 4a65906f..18330a0e 100644
--- a/data/interfaces/default/settings.html
+++ b/data/interfaces/default/settings.html
@@ -1544,10 +1544,10 @@
 
                         <div id="s3_backup_options" style="overflow: hidden; display: ${'' if config.get('s3_backup_enabled', 0) else 'none'}">
                             <div class="form-group">
-                                <label for="s3_bucket">S3 Bucket Name</label>
+                                <label for="s3_bucket_name">S3 Bucket Name</label>
                                 <div class="row">
                                     <div class="col-md-5">
-                                        <input type="text" class="form-control" id="s3_bucket" name="s3_bucket" value="${config.get('s3_bucket', '')}" placeholder="mybucket">
+                                        <input type="text" class="form-control" id="s3_bucket_name" name="s3_bucket_name" value="${config.get('s3_bucket_name', '')}" placeholder="mybucket">
                                     </div>
                                 </div>
                                 <p class="help-block">The name of the S3 bucket to store backups.</p>
@@ -2521,7 +2521,7 @@ $(document).ready(function() {
     });
 
     $("#test_s3_connection").click(function() {
-        var s3_bucket = $("#s3_bucket").val();
+        var s3_bucket = $("#s3_bucket_name").val();
         var s3_region = $("#s3_region").val();
         var s3_access_key = $("#s3_access_key").val();
         var s3_secret_key = $("#s3_secret_key").val();
diff --git a/plexpy/s3_uploader.py b/plexpy/s3_uploader.py
index ba75163e..1a56bec8 100644
--- a/plexpy/s3_uploader.py
+++ b/plexpy/s3_uploader.py
@@ -74,13 +74,21 @@ def get_s3_client():
     region = plexpy.CONFIG.S3_REGION if plexpy.CONFIG.S3_REGION else None
     
     try:
+        # Create a custom config that disables checksum algorithms for compatibility with Backblaze B2
+        # and other S3-compatible services that don't support newer AWS features
+        s3_config = boto3.session.Config(
+            signature_version='s3v4',
+            s3={'payload_signing_enabled': False}
+        )
+        
         s3_client = session.client(
             service_name='s3',
             aws_access_key_id=access_key,
             aws_secret_access_key=secret_key,
             endpoint_url=endpoint_url,
             region_name=region,
-            use_ssl=bool(plexpy.CONFIG.S3_SECURE)
+            use_ssl=True, #bool(plexpy.CONFIG.S3_SECURE)
+            config=s3_config
         )
         return s3_client
     except Exception as e:
@@ -133,7 +141,8 @@ def upload_file_to_s3(file_path, object_name=None):
     except NoCredentialsError:
         logger.error("Tautulli S3 Uploader :: Credentials not available for S3 upload")
         return False
-    except EndpointConnectionError:
+    except EndpointConnectionError as e:
+        logger.error(f"Tautulli S3 Uploader :: Could not connect to S3 endpoint: {e}")
         logger.error(f"Tautulli S3 Uploader :: Could not connect to S3 endpoint: {plexpy.CONFIG.S3_ENDPOINT}")
         return False
     except ClientError as e:
diff --git a/plexpy/webserve.py b/plexpy/webserve.py
index d57a3857..0b4d3b19 100644
--- a/plexpy/webserve.py
+++ b/plexpy/webserve.py
@@ -173,7 +173,7 @@ class WebInterface(object):
         try:
             # Create S3 client
             s3_config = {
-                'region_name': s3_region if s3_region else 'us-east-1'
+                'region_name': s3_region if s3_region else 'us-east-1',
             }
             
             # Add custom endpoint URL if provided
@@ -3337,7 +3337,31 @@ class WebInterface(object):
         # If we change the authentication settings, make sure we refresh the users lists.
         if kwargs.pop('auth_changed', None):
             refresh_users = True
-
+            
+        # Handle S3 backup parameter mappings
+        s3_field_maps = {
+            's3_bucket': 'S3_BUCKET_NAME',
+            's3_region': 'S3_REGION',
+            's3_access_key': 'S3_ACCESS_KEY',
+            's3_secret_key': 'S3_SECRET_KEY',
+            's3_endpoint': 'S3_ENDPOINT',
+            's3_prefix': 'S3_PREFIX',
+            's3_secure': 'S3_SECURE'
+        }
+        
+        for form_key, config_key in s3_field_maps.items():
+            if form_key in kwargs:
+                # Ensure string values for endpoints to prevent list nesting
+                if isinstance(kwargs[form_key], list) or (form_key == 's3_endpoint' and kwargs[form_key]):
+                    kwargs[form_key] = str(kwargs[form_key])
+                    # Remove any nested list formatting
+                    if form_key == 's3_endpoint':
+                        kwargs[form_key] = kwargs[form_key].replace('[', '').replace(']', '').replace("'", "")
+                        if ',' in kwargs[form_key]:
+                            kwargs[form_key] = kwargs[form_key].split(',')[0].strip()
+        
+                kwargs[config_key] = kwargs.pop(form_key)
+            
         all_settings = config.SETTINGS + config.CHECKED_SETTINGS
         kwargs = {k: v for k, v in kwargs.items() if k.upper() in all_settings}