Hello,
Thanks for the reply.
The situation on your site is different from others.
I’ve created a new attribute – https://prnt.sc/P8MIyn15f7GR https://prnt.sc/-t2B07ctrMS- then I’ve created a new product – https://prnt.sc/aQXaYw016kaj Please check “test product” on your site https://prnt.sc/3VFOjwwmxudz
This new product works fine because was created according to our video tutorial – https://youtu.be/LgzC4iK-j6A
It means products/attributes on your site were created/imported with a mistake that is the reason for the problem.
Regards