This is how to update of Multisite Add-on, Multiple Add-on, Import&Export Add-on.
Please how to update of below steps.
If to those who have purchased previous from 2015 Jul.
I’m sorry for trouble to you. Please contact me.
Then you will be able to download after I will associate the purchase information.
1. Download the Add-on of latest version on the my account page.
Please download the Add-on from here.
2. Please access to the Plugin of your admin screen.
3. Please deactive the Add-on of currently version.
4. Please take backup of Add-on.
If there is bugs in the latest Add-on, you will can back to stable version.
5. Please delete the Add-on.
Settings data is not be deleted of WP Admin UI Customize and Add-on.
6. Please add to Add-on of latest version.
You can upload from the above screen, or Please upload to /wp-content/plugins/ dir via FTP.
7. Please active the Add-on.
This is the update complete. Thank you for your time! 🙂
If you have any questions, bug, please free feel to ask!