can i be ip blocked?

i honestly am very confused, i tried to make a post in a community and i got this 503 error page and then when i went to the main piefed.social page i was logged out and when i tried to log back in i got the 503 error page and now no matter what i just get the error page u less i turn on a vpn? its only on my other phone though? the phone im using now works fine with no vpn but the other one only works with a vpn. i even tried clearing the cache and all the site data but its still the 503 error without the vpn on. does anyone know how i can fix this?