print anywhere and print with hp smart out of home not working

[slemash]

I am annoyed! I had bought this printer because I needed to print when I am away from home, and for almost a year now, I can no longer print using my smartphone when I am away from home.
The only way is to email the ePrint address, but this is limiting because I can't decide on duplexing.
I have tried everything. The following are some of the things I have tried
- I reset the factory settings
- I reset my modem
- I took my printer to my office and configured it to a new wifi.
- I tried uninstalling and reinstalling the app.
- I installed the app on another smartphone.
Nothing at all!
If I go into the HP Smart app the printer comes up as unavailable if I am away from home. It is available only my smartphone is connected to the same network as the printer.
How do I permanently delete the account on hp connect or permanently de-associate the printer from the hp connect account?
I find this unacceptable. and I hope someone can seriously help me.

[Rainbow23]

Hi @slemash,

Welcome to the HP Support Community. 

This issue might require one on one interaction over the phone to fix it.

I've sent you a private message with the steps to talk to HP Support. In order to access your private messages, click the private message icon on the upper right corner of your HP Support Community profile, next to your profile Name or simply click on this link

Take care and have a great day ahead!