About four months ago I've registered in the poker room Americas Cardroom because saw an ad with a streamer on twitch, he played special freeroll.
I started playing these freerolls along with micro buy-in tournaments and almost immediately discovered that the same accounts again and again showing up at the table with a streamer and getting $1000 bounty (the prize for knocking out the streamer)
Later I found out that this room has a vulnerability (exploit or bug) due to which you can sit in to the right table in the tournament.
Thus, using the required timing during late registration, you can get to the desired table in the tournament, especially with a streamer.
Later I collected screenshots and statistics and sent a report to WPN support.
I've sent 10-15 nicknames (accounts) to the support during whole month (februrary) but many accs again and again appeared and still appearing till now.
I'm sure multi-accounts and auto-sitting scripts are being used. IMO, It's not impossible manually to sit in for example 3 times in a row in one tournament again and again.
ACR doesn't fix this or doing almost nothing with that but spending a lot of money on advertising.
This serious vulnerability allows teamplay in any tournaments! Be aware!
Below I will provide screenshots (proof) of this:
https://imgur.com/a/BDhcMxk
Accounts which are playing today again and 100% cheating
SuperIrina
svnba
SuperSem
semsaltov77777