could there be problems in the future with this address?
Did you check it on another block explorer and see your funds there? If so you are good.
Much like AdolfinWolf you might run into a processor that will not handle it.
Also, sending to some people using services that do not support it might be an issue (like blockchain.com).
But, as time goes on it will be less and less of a problem as more services support it.
Also, keep in mind there is a way on Electrum to show legacy addresses to send and receive funds.
-Dave