-snip-
Concerning connection issues, I can't see that it should have been the case at my end (unless... shutting down the computer? - I had understood that this could be a problem if I had my own node, which is not the case). If it's at Boltz's end that the problem lies, the fact is that Electrum doesn't give us another option.
-snip-P.S. I hope this reply gets accepted - my previous reply got me a warning from a moderator which I wasn't able to understand for lack of familiarit with the terminology.
Shutting down or closing Electrum while swap is ongoing will be an issue since your Electrum client acts as your lightning node.
Electrum's lightning feature isn't custodial so it needs to be active to be able to receive funds.
But yeah, swap services doesn't always have a reliable connection.
I've been experiencing downtimes sometimes or channel capacity issue in other instant exchange service and I think Boltz isn't an exception.
For the mod's note, they just combined your two-in-a-row posts.