Hello @EhmannS
Thank you for reaching out on the community and telling us about your issue. I do apologize for the issue you're having. Thank you for also letting us know the additional steps you took as well to try resolving the issue. I'm wondering why only your deposit didn't make it. It could be maybe a day late on the update end but it sounds like it's fully cleared on the banks side and also made the Quicken balance incorrect as well. To start off with troubleshooting here we can attempt to deactivate and set up the account as new to relink the accounts. I'll leave steps down below on how to do so.
First thing I'll recommend is to save a backup to revert back to just in case. You can find how to do so down below.
https://www.quicken.com/support/how-backup-or-restore-your-quicken-data
Next we'll try deactivating all of the accounts for the affected FI. You can do so by following the article listed down below.
https://www.quicken.com/support/deactivate-online-banking-services-quicken-account
Once all the accounts are deactivated go ahead and follow the article here on reconnecting the accounts.
https://help.quicken.com/pages/viewpage.action?pageId=3216277
Once you've had the chance to try this let us know if you're able to get the deposit in. If not let us know and we can take another look.
Thanks,
Quicken Francisco