Hello,
Thank you very much for choosing our theme and for contacting us.
Please install the free Classic widget plugin if you have not done that yet.
Then try to regenerate “Regenerate the product attributes lookup table” in Woocommerce > Status > Tools: https://take.ms/LGpvf
In addition, please check Woocommerce > Settings > Product tab > Advanced tab and disable Use the product attributes lookup table for catalog filtering.
Please provide more details on the page errors.
Best Regards