RazorSQL MySQLi PHP桥接连接失败 - 响应代码403

Question

I use the razorsql mysqli bridge for php on my server, until now I ever could establish a remote connection with RazorSQL to my database.. but now it's not working anymore. There are no changes I can think of, that could possibly have affected the working status of my connection...

Here's the error message from RazorSQL:

ERROR: An error occurred while trying to make a connection to the 
database:  

A problem occurred connecting to: 
https://www.xxx.xx/includes/razorsql_mysqli_bridge.php: 
java.io.IOException: Server returned HTTP response code: 403 for 
URL: https://www.xxx.xx/includes/razorsql_mysqli_bridge.php

What I've tried so far:

• Check path - it's correct
• Check login data - it's correct
• add my IP Adress to enabled remote mysql hosts - done
• check rights for razorsql_mysqli_bridge.php - 777

Additional information: I've CPanel for configuring statements.

I still can't figure out, why this is not working anymore...

I appreceate any help!