In the most recent update to Flow, it now requires you to specify a group to get a list of the plans for that group, in order to iterate over all groups to which I am a member, it requires a connector that doesnt exist. Currently there are two options:
Groups I Own
Groups I Own AND I am a member of
We require an option for;
Groups I am a member of
All Flows I've created that relied upon the "Get plans I am a member of" which is now deprecated, are now not working because of this significant change to the platform.