WordPress Membership Plugin
hi,
i have a similar problem:
when i want to create a daily / weekly membership i get the same error message.
reinstalling the plugin (and or deactivating other plugins) did not solve it.
but i found a quick workaround:
the memberships are set in the database table wp_swpm_membership_tbl.
the column subscription_duration_type determines if the duration is based on days, weeks and so on and the column subscription_period determines how many days, weeks, …
the values for duration type are set in class.b.MembershipLevel.php:
no expiry = 0
days = 1
weeks = 2
months = 3
years = 4
fixed date = 5
example, a subscription for 5 days called silver:
alias -> silver
subscription_duration_type -> 1
subscription_period -> 5
i just manually added the subscription levels i needed via phpmyadmin
anyhow, i hope the team fixes this soon.
cheers