1) I have an issue with the infinite scrolling that after about 28 products it seems to stall and the spinning ball. I have tried across different browsers. Do you have any suggestions how to resolve the issue?
Below link there is 71 products and it stops after 28.
I am glad that you resolved the issue by deactivating that third party plugin which creates problem.
On your other site in which you face the same issue and using the “WooCommerce TM Extra Product Options” plugin. Just deactivate it so your site will run smoothly.
Actually that plugin adds additional fields and our AJAX custom handler works with default WooCommerce data only.