Hi,
I got feedback from coder:
1. Cannot close the Vertical menu: This is the design of this home page.
2. There are the errors in style.css file: My coder checked and he did not see any errors as you said in style.css file. (he checked on version 1.4.9) So could you please take the screenshots for these?
Speed of site: He also checked and saw that your site had some errors came from js: https://prnt.sc/neh7cc
To improve the speed of theme, you can install a cache plugin, such as: Autoptimize, remove unnecessary plugins; install the jsDelivr – WordPress CDN plugin; or contact with your hosting administrator to increase the speed. Those are the suggestions that you can follow to do.
3. The last test version of theme was already compatible with the latest version of Woo. So you just can update theme
Regards,
Yame