Hello,
3) Do you have such issue only when our theme is enabled? Try to test it with the default WP theme, for example with Storefront. Because we are able to help with issues caused by our theme.
5)
As I mentioned before I´m having trouble updating xstore core and theme, it gives me the following error: PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature
Provide us with WP Dashboard access to check the problem in more detail. Did you activate theme on the same domain where you use it at this moment?
6) We don’t have such integration at this moment. You can submit feature request here https://www.8theme.com/taskboard/ and if it takes votes our developers will be able to take a closer look at this.
Regards