Theme print template not work

hi theme changing not working please help

You need to provide more information about your situation.

If you have recently updated then have you read this topic:

so we cant change the theme we have 3 businnes brands ? what can i do ?

Please follow the below forum discussion. I am sure you will get a solution there soon.

@musthaq, so you’ve been using multiple templates and switching between them? The latest version doesn’t support “switching” between multiple templates.

Are your three themes similar in look, only business details are different?