Character login issues/303 errors

Prismstones

Ever since the Horns of the Reach update on Xbox one I've been having issues loging into my characters as every time I try I get a 303 error,I have already contacted my net provider and got the ports changed to how eso needs it as well as contacting Microsoft and browsing any other things I could on the eso support wedsite but nothing I've tried fixed it so far. Anyone know what could be the cause of this issue?

Inhuman003

here's some information that may help

https://steamcommunity.com/linkfilter/?url=https://forums.elderscrollsonline.com/en/discussion/311015/error-303-connection-to-server-has-timed-out

https://www.reddit.com/r/elderscrollsonline/comments/6bga1h/pcneed_help_error_303_patcherror_unzipfail/