My wallet works fine again since yesterday. Just use the new version 2.1.1, you can find it here: https://github.com/adeptio-project/adeptio/releases This version blocks old nodes running on 2.0.0 or even on 1.0.0.x. which has been the main issue for the chain splits.
Check your blockheight with this explorers: https://explorer.adeptio.cc/ or https://blocks.adeptio.cc/ The other one is still on a different chain obviously.