Don't think I left a review back when I used it around Shadowlands I think, and most of these posts lack proper reviews, so I thought I left mine:
I've used the software couple of times across years for various expansions/p-servers, as well as classes/specs, both paid and free trials.
I heard they had their (first?) detection wave a while ago, tho I have to say that my accounts (that I used them on back in Shadowlands actively + various classic servers/expansions) had no issues ban-wise.
The upside is that it is very simple/dumb.
Afaik, it has a very hard fixed prio-list that you cannot change (sadly) and it just presses the buttons that you manually entered before for each spell.
If a spell has no keybind, it won't use the spell.
I found it a bit wonkey at times, because the built in short pause is sometimes a bit odd/I sometimes felt like I would prefer more active and smoother ON/OFF control.
And I would've also enjoyed if I had a simple prio that I could edit myself.
IMO it was kinda tricky/difficult/or impossible to really get in touch with devs, or to interact in their forum, as it was purely Russian.
I think it performs well for actually new/bad players, as the rotiations were usually okay-ish.
The main use that I used it for, was for leveling/grinding, when I didn't want to press the same limited amount of spells over and over and over again, and it also didn't matter much if the rotation wasn't really refined, as it just had to do okay for me to chill and watch Netflix/Youtube.
I also used it as a simple auto-kick, by just only binding my kick-spell and leaving the other stuff unbound.
That way I could play manually, but had a reliable auto-kick.
I haven't checked the current price, I think it was only a couple of bucks for a month for 1 spec (or could've been class?), and back then at least it was so "clunky" that it flew under the radar for years, and did it's job well enough.
I'm actually trying it out again now because I will level a couple of chars on a MoP P-Server so I'm prepared for Classic MoP launch.
(Actually as I'm writing this, I just checked the prices)
I think they went up in price a decent amount, but are still the cheapest around, and should be pretty safe if the one wave after all these years was a fluke.
Some may find the rotations to be really good, I just speak from a very picky point of view as I raided mythic at T100 level and love to theorycraft/parse hard, which this software obviously isn't meant for.
TL;DR: In my experience, you get something that performs at around a 6.5/10 for a 8.5/10 price, with a (before the ban wave, that I wasn't apart of) 9.5/10 security.
Other posters might correct me if there have been more ban-waves than the one I heard of, or if anything else has drastically changed.
(Always accepting trial keys from the devs, if they think something improved, or if I misrepresented the current state of the product :> )
Updates are horribly slow. 2 weeks since patch and 1/2 of the classes unusable.