1. Please go to your FTP/Cpanel, and then go to folder wp-content/plugins
2. Create a new file and name it with bp-custom.php file. But if you already have it, you only open it.
3. Copy snippet code form link below into the file
https://gist.github.com/KaineLabs/c0dfe6d07c64c1ab0d34046e7853251a
4. Save