When I post a JE to misc sales and gst collected, the gst collected shows up on my GST report, but the report isn't picking up the sales amount. How to correct ?

Hi Smiles66,

It's great to see you in Community.  Welcome!  QuickBooks Online provides the features you need, to ensure your books remain well balanced.   I would be happy to help!

If you've created an invoice for the transaction, the best course of action is to receive payment directly to the invoice.  This will prevent it from appearing as 'overdue'.  However, I feel you would benefit more by contacting Customer Care team outside of Community. They would enjoy the opportunity to work with you in real-time, and review your situation in more depth, to determine if a journal entry is the best fit for accomplishing your QuickBooks goals. 

Feel free to reach out again, with other questions.  We would be glad to assist!