@Maria_Susan_Angustia and @Phil_Seeman,
I believe you’re both talking about different things.
Maria’s mention of “50 rules per project” is about item 2.1 in this post. Your screenshot represents one rule; you’re allowed 49 more of those in a project so that’s not likely at play here if you only have 37. But note the other limitations in that post in section 2 which apply to rules; perhaps another limit is being exceeded?
Phil is talking about the fact that certain plans only permit executions of limited number of rule actions per month (like 150 or 1500 actions per month).
Thanks,
Larry