Click on the button "sync manually"
By default we will test with records that you updated in the last minute. You can change that value with the "sync every" fields
After clicking on sync, you get a log:
Log are categorized as:
🔺 error : the sync can't be done. you need to fix.
⚠️ warning : It mean the sync is working, but is definitely not expected behavior ( some field are not synced )
info : It mean the sync is working, but you might check if it's expected behavior
✅: mean it's working
See the list of errors and how to resolve them here