Accordion does not work in widgets

Dear Team,

We have inserted an accordion in a widget in a Sidebar. Unfortunately, it does not work although it is displayed correctly, you cannot open/klick the accordions.

Details:

We inserted it by copying the whole accordion (which we have build in a post draft) with the Copy-Function in block menue and insertied this code in a block-Widget (Block HTML), which does not work.

We also tried it with the “Individual HTML”-Widget, which also does not work.

BTW.:

We do not have (as shown in your YouTube-video) all the details (Easy Accordion Menue and also not all the Fields in the Accordion Template Section where all are listet. So we do not have shortcodes etc.

How can we fix all these problems?

How can we insert the accordion into a widget correctly?

Thanks,

Thomas