Session Time out while trying to log in as admin

[Yupp Sirup]

Hi all,


on my dutch forum (SMF 2.1.4 © 2023) I get this message:
Er is een fout opgetreden
Fout bij het versturen van het formulier. Sessie timeout.

Can not login so.. what to do next???
Thanx for your help in advance

[Kindred]

Delete you cookies and log in again.

Are you using www or non-www urls? What is your forum set to use?

[Yupp Sirup]

I tried login in brave private browser: error , and in edge that I have never used to login: error
Seems that I use non-www
The site does not have SSL certificate

[Yupp Sirup]

Delete you cookies and log in again.

Are you using www or non-www urls? What is your forum set to use?

I cannot login as an administrator so I can not see what the forum is set to use

[Aleksi "Lex" Kilpinen]

Could you give a link to your forum?