HA Chrome web browser error message startup

Dear all,

I am using HA Web with Google Chrome, on Android mobile and on ios iPad.
I have a static IP which is the same in HA IPV4 and in my router settings.
Host name is the same in HA and in the router.

I am starting HA in Chrome Web browser with a click on a bookmark link:
http://homeassistant:8123/lovelace/0

Problem is it never starts the first time I click on the bookmark, I have to click Reload or click on the bookmark icon several times (5-8 times) before HA starts.

I get the following error message:

I tried pasting the IP adress, same issue.

Also, HA web browser constantly loses connection and reconnecting, issue only on web browser, not mobile or ipad.

Please can anyone advise how to solve this issue.

On HA Android mobile & ios tablet it starts perfectly, no issues.

Later edit: issue solved, had to disable IPV6 from windows 10 network settings

Valentin