Why is my FB messenger not working for customers?

hi I am trying to use my fb messenger my customer saying it is not working

@matt149
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Hi @matt149 ,

That does seem strange. Is it definitley your Facebook messenger or could it be on the end of the customer? If possible can you ask them to take a screenshot or describe to you what they are seeing on their end?

There is an upcoming change to the messenger set up and Facebook channel layout and I’m wondering if this could be related. There is a note about this in the Shopify Facebook messenger guide here:

Do you feel like this could be it? Looking forward to hearing from you.