24.0 Updates

We have had Intuit QuickBooks Enterprises Solutions for many years. We recently updated to 24.0 version. We did not have any issues until it wanted us to update. After updating, when logging in, it will automatically abort. I have contacted QuickBooks several times. I have had an IT guy try figuring out the issue. He has also contacted QuickBooks. No one can help with this issue. We deleted and reinstalled without doing the update and now we have issues daily. I cannot access some of my reports and now I cannot access merchant services. When I click to sign on it does nothing. The majority of our customer pay with credit card and we cannot run any credit cards.