Manual credit card payments increase the balance, not decrease the balance.

JRJ

I recently had a problem using One Step Update with Citi Bank. Now, three older manually entered payments made with the checking account increased the Citi account balance.

JRJ

Actually, I have more problems. The credit card account was opened in Oct 2019 with an opening balance. All downloaded charge transactions since into the Quicken software account decrease the balance and all credits and payments increase the balance.

Sherlock

If you haven’t already, you may want to verify the register is sorted appropriately and there aren’t any unexpected filters being applied:  open the register, select the Date column header (you want the small triangle to right of Date to point up) and Reset.

Charges should always subtract from the running balance.  
Payments should always add to the running balance.

When the running balance is in the black (positive), charges will appear to reduce the balance and payments will appear to increase the balance.

When the running balance is in the red (negative), charges will appear to increase the balance and payments appear to reduce the balance.