I considered the Swytch kit a couple of years ago even registered but having read reviews including one where it had taken well over a year to get the kit . That was enough for me and when they released the pre order I decided not to order. They bombarded me with emails and even offered a cheaper price if I accepted a kit without a warranty which didn't instill much confidence.
I really hope you get sorted soon.
I also saved money and had a low price several years ago for a Chinese rear hub e- bike.
I have not regretted doing that.
I have a "standard" hub e-bike that simply runs and runs, with almost no work from anyone, other than a temporary short in a rain storm, on the throttle.
Many cheap bikes have a) a guarantee not worth the paper its printed on and b) in my case, IF there had been a guarantee, it would have already run out long ago....Having the saving pays for a lot of possible repairs....
But what I am saying is probably only good for people with a good toolkit and reasonable DIY knowledge, though I have not needed much of that "pent up" knowledge as of now!!
As the old British saying goes:- "You pays your money, and you makes your choice!"
regards
Andy