Hi oldretiredguy!
Thanks for your question! I’m sorry to hear you’re having trouble with your BoldGrid Theme. My first thought is it’s likely that one or more of your BoldGrid plugins are out-dated and deprecated code is causing your error.
You mentioned everything was working properly up until about 6 weeks ago. Do you remember if you made any changes to your WordPress site around that time? Such as updating your PHP or WordPress core version perhaps?
You can try accessing your website via FTP or file manager and remove your BoldGrid theme and plugins from your website. Specifically the BoldGrid Inspirations plugin if you have that installed. After removing theme visit your website (if possible) and reinstall the latest versions of the plugins and theme.
Also I tried pulling up your site admin URL and it looks like there is a database connection error there so that may be something you have to work out with Hostgator to get your site fully up and running.
We look forward to assisting you further with this!