I had a few issues with ACRE (this is 1st time setting it up and using it). Basically, ACRE was not connecting to TeamSpeak.
To get ACRE running properly the following steps were suggested by the admins:
1. Shift all mods to the root of Arma3 and update the location where mods go in PlayWithSix
2. Make sure the correct UserConfigs in the @ACRE folder are also present in the Arma3/userconfig folder
3. Turn UAC totally off in Windows via the Control Panel/User Accounts/Change User Access Control settings
4. Run TeamSpeak and Arma3 as Administrator
Hope this resolves your issues too, but if not please reply with steps taken.