Can not help, since it's related to your hosting service.
Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member. -
Professional support
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Plugins, theme and development
. I don't answer to private message.
Ok, now it is clearer what the actual problem is, because I (and I think Denis as well) read your problem as:
"I can access the platform without having to login."
Actually, your problem is "just" that you can't login, correct? You se the login mask, you can put your login data and when you submit, you get a 504 Gateway timeout.
What confuses me is that you say it is on your own server, but you can't get access to the PHP logs? Because this seems to be a server issue to me.
You need to speak to the person responsible for your Limesurvey installation in your organization.
Help us to help you!
Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.
Check DB log, nginx log etc …
Something are broken but on your server.
Maybe you have some plugins ? You can remove it from directory to check if it's better
Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member. -
Professional support
-
Plugins, theme and development
. I don't answer to private message.
