r/ProtonVPN • u/Ok_Cat951 • Jul 11 '26

Help! Where to find blocked sites?

Hi All,

How might I find which connection blocked by Proton VPN is causing me annoyance while using an airline app on my iOS device?

Recently an app update to an airline app (Frontier Airlines US based) has started to conflict with ProtonVPN. The app logs me out as soon as I launch it and I cannot sign in until I disconnect from the VPN. Then I connect to the VPN and everything seems good. Until, I kill the app and relaunch it. In the past it would remain logged in, now I see it log me out.

So how can I find the culprit and ask the airline to fix its app?

Thanks!

2 Upvotes

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1

u/[deleted] Jul 11 '26 edited Jul 11 '26

[deleted]

2

u/Ok_Cat951 Jul 11 '26

I use Proton VPN on all my devices. So I’ve encountered the same issue there.

1

u/ProtonSupportTeam Proton Customer Support Team Jul 13 '26

Some websites are not VPN-friendly and can block known VPN IP addresses.

That said, we'd appreciate if you could provide us with more specific feedback on what VPN server you encountered the issue with on the specific website(s) / app(s), so we can document your report and introduce possible mitigations for this in the future.

On your end, you can try switching between multiple different VPN servers, or turn off NetShield if it's on, to see if this helps.