In testing, I noticed you cannot after a checkout use an existing username and password in the registration form for a existing user that is a subscriber account (or anything else) to in effect upgrade it.
i have a client that wants people to register with manual invites for basic subscriber membership, for the simple purpose of being visible on the global map dotted with members that have a certain custom registration field then optionally allow them to them upgrade to full membership and have access to the blog and post new topics.
Is there anyway (built in) that I can have the registration form check if the username and password match in the registration form, which simply confirms the account owner then promote the account?
A simpler way is to upgrade members (rather than providing a separate button for upgrading) after a subscription has lapsed and currently we have s2member delete users because we could not work it out any other way, which may upset people if their 'existence' in the blog is sent to oblivion when instead, it simply becomes dormant and upon paying again restores all promised privileges.
Can someone please point me to the files that s2member uses that I could edit to allow for this? I tend to be pretty good at hacking things, even though I rather not do that since I cant upgrade s2member safely if I edit its code.....OR, can mu-plugins be used to over ride any .php file that s2member uses by giving it the same file name and placing in that folder?
Great plugin otherwise!
Thanks,
Rauli