Hello @helden-image,
Actually, the thing is Yummy Pro theme is not tested with other third-party plugin like you have mentioned.
Regarding the query about the coding standard, all of our theme is constructed using WordPress coding standard. So issues is not quite related to the coding standard of the theme. The issues is may be due to incompatibility with the latest version of the “Yummy Pro” theme.
As mentioned earlier, we have not checked the compatibility so it may be due to compatibility issue.
We will definitely check the issues with the plugin and let you know.
Hoping for the co-operation.
Thank you.
Regards!!