I'm at the end of my rope... I'm a retired Verizon employee and I find the whole "sign in and get help" process to be deliberately hard, tough. and designed to confuse and get customers to just give up! 
My Galaxy S6 phone refuses to accept photos sent from my PC. Messages come thru fine, but any photo sent results in either nothing (a blank message on my phone) or an "Attachment Removed" notice on my phone. Meanwhile my wife: same model phone, same Verizon FIOS service at home, same AOL internet service, can receive PC-sent photos with no problem.
Now I just spent 87 minutes online with Samsung support, and they finally said the problem is with "Message+" supplied thru Verizon. SO: How can I fix this problem? I can hardly wait to get an answer so I get to YET AGAIN try to sign into Verizon, have to change my password, have to re-state my security question-and-answer and spend another 20 minutes running the gauntlet just to get back HERE. 

YES, I was your "phone man".
Thank you!