Mooncoin electrom? Never heard about electrum supports mooncoin. I used mooncoin core 0.10.5.0 to stock my coins(bought some in summer 2017
). Synchronization here tooks not much time, but you need to wait a little bit. Especially if you just installed it on your computer.
If you have an adress and seed you will not lose your coins(if you are the only who knows it
) so dont worry