Gaps in Reported Transactions in Credit Card and Checking Accounts

The recent Express Web Connect+ updates with my banks (three banks, four credit card accounts, one checking account) done multiple times starting August 6 have either gaps in transactions or no transactions since mid-July. I verified this by downloading statements for each account. Additionally, the same issue is with my checking account. Again, the gap is from mid-July till today when there were two transactions added to the checking account dated August 8, but many missing prior back to mid-July. Interestingly, all Online Balances are correct from those same institutions/accounts.

There are no filters applied in any of the registers. Till now this hasn't happened after years of use and no changes I have made to the accounts. All transactions appear accurate prior to July 18. After that date, depending on the account, there are as many as 10 transactions missing.

Any thoughts about why the missing transactions? There were no credit cards nor checking accounts where this did not happen.