Edit both plans and ensure "Propose plan for upgrades only if it is more expensive" under the Workflows tab is set to "No: It will be possible to upgrade to this plan (for free with pro-rating) if all conditions below and elsewhere are met". This won't have any impact on existing subscriptions though and will only impact new subscribers so that maybe why you're still having this issue since existing subscriptions will have already been put into an "upgraded to" state.
Kyle (Krileon) Community Builder Team Member Before posting on forums:
Read FAQ thoroughly
+
Read our Documentation
+
Search the forums CB links:
Documentation
-
Localization
-
CB Quickstart
-
CB Paid Subscriptions
-
Add-Ons
-
Forge
-- If you are a Professional, Developer, or CB Paid Subscriptions subscriber and have a support issue please always post in your respective support forums for best results!
-- If I've missed your support post with a delay of 3 days or greater and are a Professional, Developer, or CBSubs subscriber please
send me a private message
with your thread and will reply when possible!
-- Please note I am available Monday - Friday from 8:00 AM CST to 4:00 PM CST. I am away on weekends (Saturday and Sunday) and if I've missed your post on or before a weekend after business hours please wait for the next following business day (Monday) and will get to your issue as soon as possible, thank you.
-- My role here is to provide guidance and assistance. I cannot provide custom code for each custom requirement. Please do not inquire me about custom development.