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Can you please give it a try by following the below.

WordPress Dashboard -> Navigate to AMP option panel -> Design -> Single -> disable “BreadCrumbs” option and then click on the “Save Changes” button.

Can you please export and share AMP configuration? We will import the settings and check them and help you fix the issue.

Extremely sorry for the delay in getting back.

Here is the tutorial and do refer to this: https://ampforwp.com/tutorials/article/how-to-import-and-export-the-amp-option-panel-settings/

Add this CSS code in AMP option panel >> Design >> Global>> Custom CSS area.

li.item-cat.item-cat-21 {
display: none!important;
}