No I did not. I just found a temporary solution by doing a redirect. I noticed also that all my add to cart buttons are now in English rather than French which is the only language of the website.
Did the merchant maybe update the theme file to a newer version before this happened? That could be a possible culprit.
Or is there any language apps installed on the store? Even if not technically in use, they may have pushed a change out.
I recommend reaching out to our authenticated support team for some assistance on this. They can review recent actions taken by apps installed on the store to see if that is a possible cause. To access our authenticated support, please follow this link: Shopify Help Center.