Dear caroleg

1. Your site have error js Uncaught TypeError: $(...).owlCarousel is not a function
please send us the admin and ftp account to check directly prntscr.com/irv5gl

2. Is it possible to make recently viewed products same as other module like SJ VM Extra Slider?
-> please submit ticket custom work to do this

3. about error add to cart
-> please send us the admin and ftp account to check directly prntscr.com/irv5gl

4. about ytshortcode
-> please send us the link with this issue to check.

thanks