Customers not receiving my invoices

[hotphotos2015]

I have had two customers complain about not receiving my Invoices this week with combined shipping attached.. does anyone know why this problem could be happening?? (Others have received them fine)

[horizon1907]

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@hotphotos2015 wrote:

I have had two customers complain about not receiving my Invoices this week with combined shipping attached.. does anyone know why this problem could be happening?? (Others have received them fine)

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Possibly the phone apps. Ask the buyers if they use the apps on their phones as opposed to PC's. Just a suggestion

[lotsamagsnbags]

so does the phone app not deliver invoices to my messages?