The ignore button never shows up

Thanks a lot for the help with this issue.

I would like to confirm #3 fixed it for me with:

• Drupal core: 10.1.4
• bu: 2.1.1

 
Setting a value for field "Reminder after closing (in hours)" ('reminder_closed'), for example 6 allowed the "Ignore" button to be displayed properly.

I would like to suggest maybe some text could be added in the field's description here:
https://git.drupalcode.org/project/bu/-/blob/2.1.1/src/Form/SettingsForm...
something like:

Warning: Leaving this field empty will hide the Ignore button.

Plus maybe a line or two in module's documentation (README) file:
https://git.drupalcode.org/project/bu/-/blob/2.1.1/README.txt

Any feedback, comments, suggestions or advice would be greatly appreciated.
Thanks in advance !

Any feedback