Sorry to hear that about Linux, but was the expected answer. I'd move entirely to Linux, if the apps I care about where there. I'm writing this on Linux, as I do all my general email/web (and a few other) type things where they work well on it. The most stable and secure environment I have. It is getting better with more things becoming available. Just need more apps like yours to show up there!
Yes, am aware of EOLife stuff, but won't keep me from using it. I still run a couple of my old XP box's in Virtual Machines, as it's they only way to run selected apps that aren’t worth the cost or time to port/upgrade. In a case or 2, porting is not even possible.
I do believe a fresh install of Win10 can be made to run well enough, but have too many horror stories of people close to me that have "attempted" (and failed) upgrades, so will never be doing that. Maybe Win12 will be worth looking at by the time I'm ready to start again from scratch.