My first zigbee device was Sylvania (73685) rgbw led strip. On it’s own it worked fine but once I started trying to add sengled zigbee bulbs I kept having problems with pairing the bulbs or keeping them connected. Zigbee uses 2.4ghz so I thought maybe interference so lowered power output on wifi AP 2.4ghz band & even turned it off for testing but didn’t help. I think I read somewhere that sylvanias caused that problem. I unplugged sylvania led strip, reset & rejoined everything else and had zero problems. Tried to add the sylvania back in and disconnect problems came back after awhile. It was past the return period so now I keep it unjoined and plugged into a zigbee smart outlet. I sometimes have to remove power from it to join new devices or when I restart zigbee controller. Currently have mix of sengled bulbs, thirdreality plugs, sonoff plugs & sensors, and single aqara tvoc all working together fairly reliably.
That is normal https port, some websites may reference it directly while others skip it, it is fine. You can edit permissions on a per site basis to always ask, block, or allow location access by clicking on the lock icon > Connection (secure/unsecured) > More Information, then change to Permissions tab and set it how you want.
If tired of being prompted about location on all sites you can go into Settings > Privacy & Security, scroll to Permissions, click Settings next to Location, click ‘Block new requests’ and save changes. Per site allow/block/ask can still be configured.