Is two factor sms set up not working due to current world issues?

I was able to set up two factor with email, but life would be much easier with sms and the app. I tried settting it up about 8 months ago and support said there was issues with sending txt to my area. 8 months later and still not fixed, so i assume that the sms is sent out from someplace under sanctions and they havent moved to a new service yet?