If you are storing, using and especially mining to the Dynex web wallet I suggest you get on Discord and request a fusion of said wallet otherwise you may not be able to withdraw your coin. I’ve been trying to transfer to my desktop wallet for 12 days even after making a larger deposit and still cannot move a single DNX coin. Now they are saying you have do deposit 500-1000 DNX to the web wallet to remedy this issue. They are blaming miners for making small 1 DNX deposits but it appears the issue is on their side. Discord
Try leaving the payment ID blank when you send DNX from the web wallet as well, that may work.