DeepL has a desktop client!
Select the text you want to translate and then you can easily do it with shortcuts
(yes it is still actually quite cumbersome)

If it were me I would open source what I do (although I know that's unlikely for ssp)
Then when they ask why I don't update it: there's not enough staff. You can get involved if you want, it's open source anyway
By the way: it's not just ssp, it's taromati2 too: a bunch of problems waiting to be solved, but I don't have the time or energy
I've recently been thinking of doing some publicity to attract people and expand the development team.