I've found connection problems on the amber aide and the relay side. Sometimes I find amber isn't connected to relays and force quiting and reopening is the quickest way to fix the connection. I wouldn't be surprised though if it works with your custom set of signed relays for a while and then has periods where it just didn't. It took a lot of trial and error to choose the defaults but reliably changes over time. I should probably setup some logging and slowly rotate the defaults based on data.