Send two faxes, never arrived

I send two faxes which were confirmed by the app as being sent (so I suppose received) but upon checking 4 times at the hospital with someone who was sitting next to the fax machine, nothing arrived!! Then I tried to send a fax to a fax machine I have access to, again confirmed to be sent, but nothing came. It ain’t working.

L.C.Neverland about Send & Receive Fax App- iFax