TOPIC: Major problems with Group Registration

We are having many problems with Group Registration on gshg.org. They are in the midst of a VERY active registration for a 100th anniversary event for Girl Scouts across the country.

Problem 1 - Group Registration cost is not being calculated correctly. I have a minimum fee of $50 and a fee field that should add differing amounts depending on the user selection. For instance one fee is $325. If I choose this field for a group of 2 the calculated cost is set to $925 ... way off. If I register as an individual the fee is accurate. This issue only appeared after the latest upgrade.

Problem 2 - members in a group are mysteriously gone from the records. We had a user register 23 people. They were all showing in the records, but now only she shows and the other 22 people are gone!

Problem 3 - Users registration records and payments seem to randomly update when a user logs in. Payments are way off, and we even have some registrations being submitted as "Free" when we have a minimum payment of $50 set.

Problem 4 - If a person tries to add someone to their group after the initial registration they are not charged for the new person.

Problem 5 - we had prevent duplicates set to Yes but it did not work. But in light of problem 4 we have been forced to now allow duplicates.

Here is an example of the strange things happening with the latest update. We just received this notification (names have been removed to protect the innocent):

'registrant' has edited their registration record for Centennial Camporee
Original Registration Fee:$ 750.00
Amount: $750.00
Confirmation Number:4205918
Transaction ID:
Payment Type:PayPal
Amount Paid: $2062.50
Cancellation Fee: $ 0.00
Due: $ -1312.50

We know this person did not actually pay $2062.50 for a registration costing $750.00.

I've rolled DT Register back to version 2.7.11b. This fixed the group registration cost calculation problem. But I'm sure it also brought back other problems...