Popular online poker player forum TwoPlusTwo has suspended advertising from the Winning Poker Network (WPN) due to ongoing speculation of chicanery on WPN’s flagship US-facing site Americas Cardroom (ACR).

Last month, high-profile poker player Joey Ingram went public with suspicions of strange goings-on at ACR, including the widespread use of bots, multi-accounting, collusion and the possible existence of ‘superusers.’

A few weeks later, Ingram made public his conversations with WPN CEO Phil Nagy that indicated Ingram’s allegations had some merit, but Ingram declared that he had “limited faith” in WPN’s capacity to remedy the situation.

This week, Two Plus Two Interactive LLC boss Mason Malmuth issued a statement saying that he’d emailed Nagy on February 24 that addressed four issues: “late tournament registration (which we now understand has been addressed), bots, possible super users, and other possible collusion.” Malmuth also offered suggestions on how some of these issues might be addressed.