WordPress has no built-in store feature, let alone “multistore”.
Do you mean multisite? Or are you referring to some plugin?
In any case, there’s no blanket reason why something may or may not be working. You’ll need to properly debug the issue on the client’s site before you can draw any conclusions.
Good luck!
Multisite* my bad. Okay, then I need a little help. How can I find which plugins are active in the network and where do I find the location of the log file?
You can see (and manage) what plugins are available to the network through the network admin interface. Each individual site still needs to activate the plugins made available. Alternately, install your plugin as a must-use plugin. There’s no admin interface to do so, you simply add your plugin to /wp-content/mu-plugins/ via FTP. Create the mu-plugins folder if it’s not already there.
The location of your log files depends on server configuration. They can normally be accessed through the hosting control panel.
Can you share a tutorial for the first solution?
Ignore the fact that I used another acc :))) my mistake