dev
probably forked network
Info for dev - we got two different chains of the AMS network on two servers, difference near 4k block (126k and 130k).
I have seen this a few times and I am thinking about a solution. After a restart of the wallet it will follow the longest chain. Maybe some checkpoints will help staighten it out.
AMS on yobit is on maintenance last 3 days or even more
There is a ticket open for some time now. The wallet is in maintenance for even longer than 3 days. It is very hard to reach someone at Yobit. I will keep trying.