Can you try importing your private key into Coinomi wallet (https://www.coinomi.com/en/downloads/) and update us if it works?

As long as you have private key, you should be able to access your coins anywhere. I suggested Coinomi as I have been using it, you are free to choose other wallet as well.

Also, if you encounter any trouble restoring your wallet in Coinomi, feel free to contact me. I'll help if I can.