On a Plesk server, a WordPress instance is installed on a subdomain one.example.com of the domain example.com.
That WordPress instance is shown in Domains > one.example.com > WordPress.
After the name of the main domain is changed to example.net, the URL of the WordPress instance on the subdomain is still one.example.com instead of one.example.net.
#EXTWPTOOLK-2268 “WordPres Toolkit now properly updates site URL when a WordPress site is hosted on a subdomain and the main domain is renamed.”
- WordPress Toolkit 5.0.0 30 September 2020
If update is not possible for some reason you may try the following
Until the bug is fixed, use the workaround:
Go to Domains > one.example.net > WordPress.
In the card of the instance one.example.com, switch to the tab Database and click open in phpMyAdmin next to Database name.
In phpMyAdmin, select the table
home, change the value in the column
option_valueso it contains the new subdomain name: https://one.example.net.
Return back to the tab with Plesk and click Refresh in the instance card.