[Pro Sites] Combine Pro Sites with DigiMember

We would like to use Digimember ( https://digimember.de ) as a portal for the registration and subscription of Pro Sites Pages for the payment and administration of memberships. Currently the two plugins do not work together or cannot be combined in their current functions. We ask for a cost estimate for the implementation if possible. The updatability should remain with both plugins.

greetings Matthias