Good afternoon Manisha and welcome to the Events Calendar forum!
Thank you for your interest in our products.
We’ll be glad to answer your questions.
I need to buy this plugin so i need to know whether this plugin will work properly on tablet and mobile device as our previous plugin has error in the mobile and tablet device.
Absolutely. As long as you are using a responsive WordPress theme, our plugins will display and adapt nicely to mobile and tablet device.
and It is compatible up to which version of wordpress.
Our plugins are compatible up to the very last version of WordPress (we upgrade our plugins about once to twice a month).
Have a good weekend,
Geoff B.