If you are unable to synchronize Ebay commands on your module, check that the “command retrieval timeout” option is not zero among the module parameters.
Settings> 3. Command Parameters> Command Retrieval Time
If the value of this field is “0”, the module will not be able to retrieve eBay orders. We advise you to configure your module to synchronize the orders of the last 14 days.
If your shop is synchronized regularly through the CRON configuration, you can set a shorter time.
Otherwise, if you do not synchronize the commands regularly (few traffic and synchronizations without CRON), then it will be necessary to define a higher value (for example 30).