Hello,
Thank you for getting in touch with us.
Android Tablet: 1) regarding to the slowness, can you please try to install Chrome on your Android device and let us know if you still experience slowness with it? 2) As for the usability of Zedity on touch-screens, please keep in mind that, despite some functionalities may be working already, the official touch screen support is currently under development.
No button showing: this is most likely a conflict with another plugin. If you want us to inspect your environment, please provide us with a temporary access to your admin area (you can open a ticket here: https://zedity.com/support )
Looking forward to hearing back from you.
Thank you