Learn how to install/upgrade M2E Pro on Magento Marketplace.
* If your M2E Pro was initially installed via Magento Connect Manager, please complete the...
After Magento Team made the announcement about Magento Connect closure, the website was...
Sometimes Magento Connect Manager does not show update even if it is available.
If you were locked out of the admin panel with an error after you've installed the new version through the Magento Connect, most probably, you have a Compilation option enabled in your Magento.
Check out the Module upgrade options.
There are several reasons why Menu option doesn't appear.
Check the reasons why synchronization may not run after the Module upgrade.
The M2E Pro menu may disappear after the upgrade because of the following reasons: