Hello Jaqlynn:
For an explanation of why the GL batch(es) won't post, print (or preview) the Batch Listing(s). In the case where there are recognised reasons to not post, you will see a list of reasons at the bottom of the report. Each will have a number and at least one of them will appear in the right-hand column of the the transactions listed above. That will tell you the reason(s) that the batches won't post. A likely cause is that the fiscal period is locked.
For an understanding of how the Payables and Bank modules use the clearing accounts, the Bank Reconciliation manual would be a good resource. Or, contact your Adagio consultant for their help for that and any other issues.