bro, i took had that issue, but i have a trick try it out
1.open vpn settings in opera itself
2. open telegram in sidemenu bar.
3. refresh it ,
4. it will open and type your phone number and go on
5. if code not comes, turn off vpn and once again refresh the telegram sidemenu bar.
6. This time it opens, give details and wait for some minutes and you will get the code and you can use it.
7. comment me if it works
