When a product type data input switcher field is set to ‘Is required’ it becomes disabled on the front end, it is not possible to select the switcher in the product form. This was raised in November (https://getvoxel.io/questions/bug-1-4-3-data-inputs-switcher-when-required-has-vx-disabled-class/) and was supposed to be fixed in the following update but seems like the bug is still there.