In other words, it could just be a glitch.
I hope you are correct.
After giving it some additional thought, the suspension could simply be "temporary" as the OP may have reached a specific amount of credits earned over a certain time frame.
If I may, the only reason I eluded to the "false information" query, is that I know several players that were "banned" from taking Peanut Labs supplied surveys due to giving answers they "thought" the survey wanted to hear.
I guess only time will tell what the outcome will be