

1 many websites block vpns, sadly the websites used to search for links will block you. This is not a stremio/stremio add-on issue.
2 they’re telling you to disable extension/VPN because usually it’s what is blocking payment processors. This is not a torbox issue, payment is always an issue for privacy, and if you’re paying with a card/paypal, it does not make any difference to hide your ip.
Trakt is not a debrid service, and I’ve never heard of easy news, also I’d expect you to have the same issues while paying on other websites.
If you really don’t want to disable either the VPN and possibly the extensions check if one of the debrid service accepts either gift cards or crypto payments

VPNs providers have a limited number of exits, so their IP address are “public”.
Since a lot of scammers etc use VPNs to operate, it’s common for many platforms to just block these known IPs.
Google may ask for CAPTCHAs, for example.