Ever since the sync case for Singapore banks on quickbooks. I have not been able to sync latest transactions from the bank. Always sync about 2 weeks late transactions

Allow me to share you how frequently the system downloads your bank transactions into QuickBooks Online, Joel Shee.

Every night around 10 p.m. PT, QuickBooks Online downloads the most recent available transactions; some banks may take a little longer. If you aren't receiving the most recent data, let's perform a manual update by following the steps below:

1. Click Banking or Transactions in the left panel.
2. Choose the Banking.
   
3. Select the respective Bank and hit Update in the upper right. QuickBooks begins updating your account.

We can also manually upload your bank transactions by following the procedure in this article:: Manually upload transactions into QuickBooks Online.

Furthermore, the article What to do if you get a bank error or can't download transactions in QuickBooks Online lists different bank error codes and detailed troubleshooting steps to resolve them.

I want to make certain that everything is in order for you, so please let me know if you require any additional assistance. I'll be there to assist you. Have a wonderful day, Joel Shee.