CAT proving grounds is now IMPOSSIBLE

Same here. I was able to previously 3 star this event with Padme, General Kenobi, Jedi Knight Anakin, Ahsoka Tano, and C3PO, and now I cannot. I'm also not sure why my star rating did not carry over from the regular non-Conquest+ Pass Proving Grounds mode, but can only assume that it's a "separate" event.

I'm having the same problem. From reading about the event on Reddit it seems that the best people can do it get 1 star but that's only if the rng is in their favor. This was the easiest event for me in proving grounds and I bought the conquest pass + for the first time in hopes of getting CAT a month or two earlier than I would without the pass, but with the rework, nothing I have can even put a good dent in the team. The best I have been able to do is take out Maul, but then my team gets smoked be the 3 ISCs and Gar. When I did this event in the normal proving grounds my team of Padme (R5), JMK (R9), GK (R8), JKA (R5), and Ahsoka (R7) demolished this team and now I can barely do anything. For those who don't have amazing characters to use against this team, CAT is now one of the hardest characters to get if you didn't already 3star the event. 

Once again we're being shown that CG either does NOT have a QA team, or their QA team is asleep on the job.

The whole reason I got the pass was for Cat shards this needs fixed asap and or a make good. This is so ridiculous. 

Same here. They also never fixed the previous issues with the sims resetting. It’s carrying over from last time, but not before the reset glitch. 
Super frustrating. Waste of $30 for the Conquest+ pass tbh. 

Same here, had the event at 3 stars, all my stars are now gone and unable to sim the event. I brought the pass mainly for the extra cat shards as I'm going for jmk next.

Last proving grounds my progress was reset, I was able to 3 star the event again. This pg I can't beat the reworked event as they are insanely buffed and I don't have sith trio & malak at relics yet, even my slkr gets demolished before I can take more than 2 turns.

If this isn't fixed I will be refunding.

Same for me, bought the Conquest Pass + simply for the extra CAT shards, as I'm about to unlock JMK.
From the video guides I've seen, a 100k hp GK has been able to easily tank all the assists.

My R8 GK with 123k HP is just instantly melted by the initial burst.

Probably gonna be difficult to get a refund on this as well, since we have used the perks of the pass in Conquest.

I'll share your report with the team. As soon as I have an update, I will let you know.

Same here, this is my second proving ground event last time first try 2 stars with GL Rey. This time, I survive the first  round because all get invulnearable second round all dead.

This is ridiculous I was able to get 2 stars last time easy but now my Padme team is killed instantly