Unable to add custom variant option in the product

Hello,

I am unable to create custom variant option in my product. Creating custom option “Ring name” but it chooses “size” automatically.
Also, I have attached the video for this concern: https://nimb.ws/DYRWPU

Thanks!

Thank you Barifoba, for providing the solution.

Hello @Shivalika_Dev : would you be able to share the solution ?
Message from @Barifoba is not visible.

Thanks in advance !