Groestlcoin has its own blockchain and they have a specific wallet. Can you tell us what other wallet/s you tried accessing your coin? Next time you try to transfer, make sure that the other wallet supports your coin.
Yes i know Groestlcoin has it's own blockchain and i know i need to use Groestlcoin wallets which i did, but shouldn't every Groestlcoin wallet work with the same seed?
I used Electrum-GRS both on the computer and Android, i think i used 2 other wallets on my android phone(don't remember the names). Then i used Groestlpay(this is the only one that worked).