after the 14 day trial expires, it will revert to the free version. and
in my experience, if a newer version is offered (3.1 to 3.4 for example)
, accepting will reinstate another 14 day trial in which it offers full
functionality unless you opt to upgrade to the premium version or you
let the 14 days elapse again.

I don't know what you can do about the scanning problem.

as for scripts, there are none because none are really necessary since a
lot of tabbing around is the primary method of navigating it's UI (shift
tabbing doesn't seem to work reliably). however, it would be nice if
someone would make a script that would facilitate the efficient use of
it's functionality such as reviewing and selecting detected potential
threats, and the like. but It's still usable to us blind users as it is.