Hi Johnathan,
Sorry to hear about the problems working with the mobile menu button in Astra. Unfortunately the Astra theme is not managed or maintained by BoldGrid and our ability to troubleshoot issues with it is limited, but we will do everything we can to help!
I was able to find a guide in the Astra documentation that provides some additional insight on working with mobile headers in the theme that might help you get things working as expected.
If that guide does not have the information you need then you could also try reaching out to the Astra support team directly on the WordPress.org forums to get additional assistance with this issue.
I hope this information helps you get your mobile menu toggle functioning properly and please let us know if there is anything else that we can do to assist you!