You should probably provide some screenshots.
How can I attach a pic here?
You can't attach here, but you can use any of the thousands of services that allow that. For example Google Drive or Dropbox.
Can I send screenshots to your mail?
Login screen checkbox on chrome
https://drive.google.com/file/d/1u6N6yFIAKx2IfX5EIXkCUV365DW_omVh/view?usp=sharing
Login screen checkbox on firefox
https://drive.google.com/file/d/1uoal_wEJ_xUkdKWZ31K8wJ1mSKWLPUk3/view?usp=sharing
Login screen checkbox on edge
https://drive.google.com/file/d/1EBJd7D6oHmpk5rjrtRfirPPnSh-RJ78U/view?usp=sharing
Are you serious? At least provide a screenshot of the login dialog.
Bigger screenshot of login screen on Chrome-
https://drive.google.com/file/d/1_nypeGsc2-yuCcZF3BgQ4WsXbUDslEwX/view?usp=sharing
It seems like some images are not loaded. I suspect you have some internet connection issue.
I don't think it is an internet connection issue. All other things working great except the checkboxes. I sent here my browser console screenshot -
https://drive.google.com/file/d/1sMuBNJyddoyj744LbOT6c1cwzsFS_Wqa/view?usp=sharing
All checkboxes on the entire app are disabled. It should not be due to internet connection.
What's the injection error? Are you sure you have tried it without any browser plugins?
I just installed firefox in order to investigate this. And I didn't install any third party things in firefox and edge.
Does it work on demo servers?
Yes. Everything is fine on http://demo.traccar.org/.
Can I have access to your server to take a look?
I am trying Traccar v3.14 local hosted on a Windows10 box. All checkboxes in the manager webapp are disabled on Chrome & Firefox and are hidden on edge. Is it a bug ? or did I make something wrong?