I had it hang like that after latest update. Ended up with a force closed channel a few days ago. May be separate to the degraded function of fedimint. 

I went thru the process of closing the wallet on first device and reloading by seed on another device then closed it all the way out.

Then deleting everthing on the first device and reloading it on the first by seed. Only use from one device at a time.