403 forbidden access to this resource on the server is denied wordpress

Hello everyone!

I have a problem in my wordpress website, when I enter to the website with VPN on it gives me this error: 403 forbidden access to this resource on the server is denied wordpress and when I turn off the VPB the website starts working without any problem, so what I need is eveyone can enter the website with VPN or without, so can you help me please.

Btw my website is also linked with cloudlfare (I doubt that is the reason) but also no because I already have another website at the same hosting working good with VPN so I think the problem in the website!

I also tried to turn off all plugins but the problem still happened. so please help me <3

The page I need help with: [log in to see the link]