I have a site with a single a single Subscription level called "Premium". on the subscription page it say "Upgrade from Premium" but there is no button, form or html below that title.
The Subscription is Serial, 1 months, price $29.99. I am using Paypal express Gateway in non-sandbox mode.
the user I am testing with level expires on 9/17
Under Options/ extras I have the Membership renewal period and Membership upgrade period set to 1 days each
For now I am just commenting out the title, on line 322 of renew.form.php but would love to know how to get it to work right without hacking.