10.14.3: Mojave AppStore and other services accepts credentials but nothing happens

The only working thing is my iTunes, else does nothing when accepting my 'correct' credentialsAll threads posted on this forum have been tested (en0, NullEthernet, etc...)

Any new fixes for this? It doesn't say any errors, just accepts email and password then still not logged in.Thanks in advance 📷

(I added a help flair but I can't see it now that it's posted, apologies)

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https://i.redd.it/v4cmbay30bm21.png

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