Chris wrote:
Yes—being connected on both devices is only the first step; your browser must address the SparkBox over its Tailscale IP. In Tailscale’s Machines list, open the SparkBox entry, use its 100.x address in place of the address you normally use, and keep the same dashboard port. What address (you can redact everything except whether it starts with 100.) are you trying, and what does the browser show?
Chris wrote:
Sorry—my last reply repeated the step you had already tried. Please try the same address with http:// written explicitly at the start (not https://), for example http://100.x.x.x:8443, and tell me whether the browser shows a page, an error, or keeps loading. I’ve corrected what I know about this so I don’t send the next person through the same repeated step.