I heard that the wallet MEW may not be used anymore, this information is true. So if the wallet MEW for some reason can not be used then can we use any other wallet?
Where did you heard about this?? I think wrong because there are still so many people using MEW, and im one of them. I think MEW is free safe wallet. For more safe you can login into your account using JSON File then input your passoword. Never login with private key because you can wrong paste