I get logged out of forum

[maketopsite]

I can login, I see Welcome, maketopsite ... in the top right corner but I get logged out of forum when I refresh web page or open forum link in a new tab or click some forum link.

Latest Firefox 64 bit downloaded from mozilla website. Private mode. It doesn't happen in Palemoon.
Any idea please ?

[coffeecat]

Any idea please ?

Yep.

If your public IP address changes, you usually get logged out of the forum. Check your IP address periodically to see if changes coincide with being logged out.

And/or

Do you have any browser addons that interfere with cookies? That's a sure fire way of interfering with logged in status. Also, I see you are using private mode. Since - I believe - that only blocks third-party cookies it shouldn't interfere and I don't recall anyone complaining before about this issues with private mode, but if all else fails, something to think about.

[maketopsite]

Yep.

If your public IP address changes, you usually get logged out of the forum. Check your IP address periodically to see if changes coincide with being logged out.

And/or

Do you have any browser addons that interfere with cookies? That's a sure fire way of interfering with logged in status. Also, I see you are using private mode. Since - I believe - that only blocks third-party cookies it shouldn't interfere and I don't recall anyone complaining before about this issues with private mode, but if all else fails, something to think about.

Thank you.

No browser addons that interfere with cookies.

The problem did not happen anymore.

[maketopsite]

Yep.

If your public IP address changes, you usually get logged out of the forum. Check your IP address periodically to see if changes coincide with being logged out.

And/or

Do you have any browser addons that interfere with cookies? That's a sure fire way of interfering with logged in status. Also, I see you are using private mode. Since - I believe - that only blocks third-party cookies it shouldn't interfere and I don't recall anyone complaining before about this issues with private mode, but if all else fails, something to think about.

Happened again with Palemoon in private mode. No change in IP address.

So I've clicked on
Login with SSO

Personal Data Request
has appeared

I've clicked on
Yes, log me in

And I logged in without need for typing login name and password.