Membership Plugin not giving access to paid members

I have been using the Membership premium plug in for over two years and I am using version 3.4.6

I am using the 2CheckOut payment gateway and BuddyPress.

Since the last updates there is a problem with members who have their recurring payments successfully billed.

We both receive notices that the payment has been successfully billed, their payment shows in the 2CheckOut transactions in my dashboard, but it is not transferred to the membership plugin. Members subscriptions expire and they are not allowed access.

Please help, I have over 150 members with recurring monthly payments and this just cannot continue.

I have checked all of my settings and I just do not know what else to do.

Thank you,