Thanks for the update.. You happen to use DMSS? If you do you can use that app to scan the device QR and get an instant reply I just didn't want to go that route to start with seeing most people don't have DMSS. Seeing I also own Dahua Cameras I have that app as well. Oddly I was locked out of one one mine with a Email that I was talking about (My own Server) and thought before I give up lets try this app and sure enough it worked and I got the email code sent after a few weeks trying all other ways via Email.
If you do have DMSS it is kind of hard to find the area if you have never seen it before. Bring up app, Click on the ME on bottom right, then click on Tool Manager, then first option is Device Password Management. When you click that it will bring up QR code reader. Scan the QR Code and you will get a reply. It Will pop up saying Request Resetting something and I just did it and got the code back already within 30seconds..
If you don't have DMSS it is a tool that you can use with IVS until the Amcrest App update comes out so something to think about.. Just remember it will be only able to access the device on your Local Network because you will have to add the Recorders via IP I use both so I can get my IVS info pushed
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Be Safe.