I've been using your wallet app on my phone for a while now and it works just fine for me.
However, there are certainly some issues with desktop app (i have win 10) - I've tried to restore it with my seed phrase which I re-checked several times and I still get 400 error.
Didn't find any information about it in your FAQ. Its not a big deal, just wanted to let you know if you're not aware of that