Date problem in the frontend form

Hello, in the registration form of my site I have set a field for the birthday date. everything worked well so far but now something to change: impossible to add the date in Frontend. a single field and the calendar does not open while in the backend everything is working properly.
I try to change and just put the drop down menu but still the same problem.
Is there a solution ?

thank you so much

René

If it's not working in frontend you likely have a fatal JS error present on frontend causing the JS of the date field to fail. Switch to default Joomla protostar template, clear Joomla cache if enabled, and retry to see if issue goes away.

Hello Krileon,
Thanks for your advice,
I did everything you told me but nothing changes.
Here is the screenshot and the birthday (Date de naissance) ate field is not correct.
Regards

René

What do you have "Calendar Type" set to within CB > Configuration > General? Did you accidentally turn off CBs jQuery within CB > Configuration > Integrations?

Hello
"Calendar Type" set to within CB > Configuration > General : Drop-down list without popup calendar
jQuery within CB > Configuration > Integrations : ON

Regards
René

Are you using any optimizer extensions like JCH Optimizer? If so try disabling them and purging cache then seeing if issue persists. Something is breaking the JS entirely since the date field is stuck as an input.