For Plugin Install help you have to follow below steps:

1. Kindly login to my-account on our website.
2. You can see your download history there. There are different types of zip files.
3. Now, you have to download “WPOS Plugin Bundle Zip” file for all plugins.
4. After download you have to “Extract” above zip file at your location.
5. When you extract, you can see all single plugin zip files under that.
6. Find your plugin zip file from there and upload in your website. You have to upload single zip file instead of whole bundle zip file.
7. Then add your license key in the plugin license area to get automatic plugin updates.