Hello, Yuvi,
Thank you for contacting us and for using XStore.
Please read this article first – https://www.8theme.com/documentation/xstore/theme-installation/how-to-registerderegister-xstore-theme-livestaging-websites/ You are using XStore one 2 sites right now, screenshot we added in the Private Content area.
Site migration is not related to the theme, so we don’t have any detailed suggestions. We recommend contacting your hosting provider, because, as a rule, hosting support helps with this.
About PCLZIP_ERR_BAD_FORMAT (-10), please apply the solution from this topic – https://www.8theme.com/topic/i-can-not-update-xstore-from-my-wordpress/#post-359539
This problem occurs when you are trying to update the theme or plugin on the different domain that the theme was activated (for example you activated the theme on localhost and moved it to live domain). Re-activation as described in the topic will help you.
If you have any additional questions or concerns, please do not hesitate to reach out to us. Our support team is always available to assist you.
Kind Regards,
8theme team