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Before you start the installation process:
1. Make sure you have full write permissions to all Magento files and folders;
2. Check whether your server configurations comply with the next values:
Max execution time = 600 seconds or more;
Memory limit = at least 1 GB.
3. Check your Magento version:
Magento v.2.4.4 (supported PHP versions ~7.4.0 | ~8.1.0) is a minimum required Magento version for the upgrade to the latest M2E Pro version;.
For Magento v.2.3.x and lower (supported PHP versions ~7.1.3 | ~7.2.0) the latest compatible M2E Pro version is 1.35.0.
...
Before you start the upgrading process:
1. Make sure you have full write permissions to all Magento files and folders;
2. Check whether your server configurations comply with the next values:
Max execution time = 600 seconds or more;
Memory limit = at least 1 GB.
3. Check your Magento version:
Magento v.2.4.4 (supported PHP versions ~7.4.0 | ~8.1.0) is a minimum required Magento version for the upgrade to the latest M2E Pro version; .
For Magento v.2.3.x and lower (supported PHP versions ~7.1.3 | ~7.2.0) the latest compatible M2E Pro version is 1.35.0.
...