I built an email reminder template using MJML. I've received complaints from three clients that the email they received from me is blank. The only discernible pattern is that they are all aol users. I had one of them send me a screenshot.
This client's computer is Windows Vista and using Firefox to display it. I haven't received responses from my other clients.
I created an aol email for testing and sent a reminder in the same way my other clients would receive them.
It works correctly for me. (Windows 10 using Firefox) Does anyone know whats causing this?