Sorry, but we haven't heard of this issue from other players. Your best bet would be to contact either Xbox support or Deep Silver support:
techsupport@deepsilver.com
We are not involved with the Switch port at all, just helping to promote it as we are the original devs. We are currently working on a new game but haven't revealed any details yet.
Our new streaming room is coming along; door is on, greenscreen is up, and a whole mess of new gear is getting setup. Just waiting on some delayed furniture to get this party started (tentatively May 2!)
We're not usually involved with ports of our games, but we aren't aware of any current plans for Summoner. Always nice to see some love for our older titles though!
There isn't one. You will be able to save Boss characters in local save slots though. Also, we are not working on the port, which is being done by @DSFishlabs
We appreciate the offer, but it's less about patching the existing game (that ship has long since sailed) but rather offering the pre-Workshop build as an option for players having issues (which won't need community testing.)
We ran into issues with locating the correct build, as well as problems actually testing them on Steam. We're still looking into this and will update the community when we have more info to share.
We aren't involved with developing ports of our games, which are handled by an outside studio. The decision to do them for a platform is also a publisher decision rather than a studio one.