Thanks for reaching out. Your site is awesome, I really like what you’ve done with the theme.
Sorry for the hassle. Please, could you try upgrading manually as follows:
1. Go to Plugins and deactivate Polestar Premium.
2. Delete Polestar Premium.
3. Download the updated Premium ZIP file using the link I’ll send in a moment.
4. Install and activate the ZIP from Plugins > Add New > Upload Plugin.
The updater within Polestar Premium was recently improved so hopefully, the next update will proceed without a problem. If there is a problem again, I’m happy to assist with the troubleshooting steps I mentioned via email.