Typing on Android works for me with the APK version, but not the web version (on Android). Try installing the APK version, rather than running (or installing) the web version. You should (hopefully) be able to export your saves to run in the other version.
(Also, it may be worth trying other/third-party keyboards.)
I see what you mean about anal stimulation not raising arousal when turning off the overstimulation mechanic. I remember running into that issue when I first started, and nearly forgot about it. This appears to be the case on both Android APK and Windows versions for me, on a fresh character - both modded and unmodded.
I believe some of the perks you can pick up, later, will help you. Between unlocked perks and some mods - even with overstim disabled - my frisky feline fellow has zero issues enjoying being the prison cumdump!
(In fact, before the update, he tended to enjoy it a little *too* much..as he would end up cumming on every single action while getting dicked down - blocking choices and sometimes leading to a soft-lock. The update actually addressed that issue, for me - now, at worst, he might be cumming every 2-3 actions. :3 )
Try to hang in there and get some perks unlocked. Frequent use of lube may help, too! (AutoLubeMod might be of interest, too.)
I saw the Tease issue when the update first released, too. I believe one of the hotfixes has already addressed this - as I have not run into it, since.