Can't save Holder theme options


I have deactivated as many plugins as I can but I cannot get Holder theme to save settings.

I am running Pro Sites and Holder is a premium theme.

Running latest wordpress

I can’t deactivate all plugins as it is production, but I have deactivated all of that blogs plugins. ( all network activated plugins are still running)

I am super keen to get holder working. I have tried creating 3 sites on my network and still it will not save holder theme settings.

Any ideas?