I can see that you did everything you could to fix this banking issue.

We appreciate you for performing the troubleshooting solutions provided by my colleague. I've checked here on our end and there's no reported case about this one. Since the transactions are missing under the For Review tab when connecting to online banking, we can use the CSV file to upload the data. Beforehand, make sure it's in the correct format. After that, follow these steps to ensure you'll get the April and May transactions:

1. Go to Transactions and then select Bank transactions.
2. Tap the blue tile for the account you want to upload the transactions.
3. Click the Link account drop-down menu and then Upload from file.
4. Select Drag and drop or select files, then select the file you downloaded from your bank. Then select Continue.
5. In the QuickBooks account drop-down menu, choose the bank you want to add the transactions. Then, select Continue.
6. Follow the onscreen steps to match the columns on the file with the correct fields in QuickBooks. Then select Continue.
7. Select the transactions you would like to import. Then select Continue.
8. Press Yes.
9. When you've accepted your transactions, hit Done.

For more details about the process, please see this article: Manually Upload Transactions into QuickBooks Online. If the same thing happens, I'd suggest contacting our Customer Support Team. They'll pull up your account in a secure environment and investigate what's causing this issue. Here's how:

1. Go to the Help menu at the upper right.
2. Select Contact Us.
3. Enter your concern.
4. Click Let’s talk.
5. Choose Start a chat. and type in your contact info.

Lastly, review this additional help article to ensure your books and balances are accurate: Reconcile an account in QuickBooks Online.

Please keep me updated if you have any questions or concerns about bank feeds. I'll be by your side every step of the way. Take care always.