Can't access CPanel over some ISPs

So I've just discovered a big problem with GoDaddy/CPanel and It's making me want to bang my head against the wall. No matter what I do, I can't seem to access my CPanel. I have been given delegate access from my client. I log into my account, go to Delegate access and then access my client's account. Afterward, when I click on the Manage button in the hosting tab, it just does nothing. It keeps on loading until I get this error. I'm attaching all relevant screenshots. alt="Screenshot from 2020-04-20 06-23-30.png">https://in.godaddy.com/community/image/serverpage/image-id/11927iBA56854705C28E69/image-size/large?v=1.0&px=999
I tried contacting GoDaddy Support but obviously to no avail. However, when I try accessing the CPanel through Mobile Hotspot from my phone, it loads up just fine. But that's no good as well as I keep getting an IP address changed error and keep getting logged out. I tried using a VPN, it didn't work. I tried using Tor, GoDaddy won't even let me log in there. I can't do any work on the server, can't upload/update my site. Please help me with this or at the very least, tell me what the problem is so that I can go find a fix myself.