At this pointed I have installed dash-drive on Ubuntu 22.04 and rpi 4, and in both cases was able to access it on my browser. Howeve in both cases after changing something in "setup", both instances are no longer operative. Any thoughts on cause and how to fix?  

Some back ground. My interest is to have Android Auto like capabilities in my classic 1971 BMW Bavaria without molesting the dash or center console.  To this end I have found a way to mount a thin tablet such as an Amazon Fire, or Google Pixel Slate, and if addtional electronics are needed such a computer, router, or whatever they would be mounted under the rear seat. My interest in dash-drive is more of a user than developer as my development skills a quite dated.