I am sorry but that theme is not supported in these forums for the following reasons.
1. The Tesseract theme is not GPL compatible. The terms of on the author’s site include this verbiage.
https://tesseracttheme.com/terms-of-use/
This license does not grant you permission to:
- Remove any copyright from all versions of the Tesseract theme without the purchase of the Unbranding Plugin license
- Distribute or resell this theme as your own
- Advertise the download of this theme with or without modifications
- Attempt to decompile or reverse engineer any software contained on Tesseract web site or products
Which pretty much guarantees that that theme is not for these forums. That’s a real deal killer in this community.
Non-GPL products are not welcome in the WordPress community. Official WordPress policy states that all plugins and themes that are publicly released are required to adhere to https://www.ads-software.com/about/gpl/
Any support requests for non-GPL products are usually ignored, in the interests of supporting the community and its freedoms.
2. This theme is a commercial product even though the author gives his theme away for free. In order to modify the copyright statement (according to the author) you need to purchase a plugin from the author.
For pro or commercial product support please contact the author directly on their site.
https://help.tesseracttheme.com/
As the author is aware, commercial products are not supported in these forums.
I hope you are able to find support for your theme but please, seek support elsewhere. That theme is not welcome here.