I don't know what is wrong, but something is wrong with Gmail. I want to open a Gmail account but whenever I try to verify using my phone number, it says "this number cannot be used for verification" ive tried like 5 numbers which 3 of them has never been used for gmail before, but i get thesame error. Buy when I tired linking one of those numbers to an existing Gmail account, it worked.
It shows that there is something wrong.
Did you experience thesame thing too?