I have used productsInRow v1.1 My product are now in rows But if i want to change it back in the plugin center It doesn't work
If by 'plugin center' you mean the Plugin Manager control panel then the reason for productsInRow not being controlled by the Plugin Manager is probably that you have not set it up that way. Read the AboutThisPlugin document for Plugin Manager, User Guide section, beginning 'Plugins that have not been set up to run under the Plugin Manager ...' and see if that helps.
Otherwise, just uninstall productsInRow if you don't want to use it.
I want to switch between the rows if i use the code