The accordion collapses and expands on my desktop but when I check the page on my phone, Samsung A8, the accordion remains open - the headings will not collapse.
I had it set to stay open when the heading was clicked, so I tried changing the setting to not stay open. Neither setting changed the issue.
I looked at the page in the desktop version on my phone and it also stays open - the headings will not collapse still.
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Please send me your accordion page url, i will check the issue.