I joined the Discord server more than a month ago, and I tried to verify using my number a lot... a lot of times at various times, using multiple numbers, with and without VPN.

But nothing seems to work—it always shows me "unable to send SMS message."

Can anyone help?

same happened to me… joined for this exact jam last year and still can’t verify. I think its something wrong with the server itself and you can’t do a lot about it 

update: looked a little deeper and you can only use your phone number for 1 account, i had it linked to an old unused one and once I deleted it off that account i was able to verify 

Thanks for the advice , Iam happy that you were be able to verify .

 but that's my only account and I didn't verify any other accounts using my number. Also, I tried multiple numbers.