Yes, you can choose the devices on which you wish to display your optin forms on (Desktop, Tablets or Mobile).
To modify your display settings, follow the few easy steps mentioned below:
Step 1: Click on the ACTIONS button present on the form that you wish to disable for mobile users. Select the Edit option from the drop-down menu.
Step 2: Go to the Behavior step, and expand the Display Rules panel.
Step 3: Select the devices of your choice. Disable or switch off the MOBILE DEVICES toggle.
Step 4: Navigate to the Publish step, and click on the Finish button.
That's it! Your form has been successfully disabled for mobile users.