printer wont connect

[kizz6]

See above Deskjet 2810e - wont connect - app says its found it then on install says it can find it - they can find it in the bin shortly - I need to get something printed urgently 

[BeemerBiker]

Your printer ends with the letter 'e' and may require a subscription as discussed here

Spoiler

HP+ printers are designated by a lowercase "e" at the end of their model number (e.g., 8135e rather than 8135). These models are enabled for HP's smart printing ecosystem, which requires a permanent internet connection, an HP account, and the exclusive use of Original HP ink for the lifetime of the printer.

If you are using a subscription then the printer needs to be online so it can phone home.

If not online then you need original HP ink in the printer.

You can print using Wi-Fi direct.   This procedure bypasses any problem with the router or any repeaters or boosters your network may be using.   When a printer wakes up from sleep it might be given a different IP address by the router.  This IP address is not the same as the one your PC or Smartphone is using.   Attaching a USB cable from the PC to the printer, or using Wi-Fi direct  to the printer, bypasses the inability of your device to connect to the printer over the router.

If you are using the new HP App to print, note that it must also "sign in" to print.  Do not use the HP App or HP Smart to print if it cannot sign into an HP account.  If using Word, Notepad, Adobe,.etc, use the "print" command.  Same for smartphone,  Use "forward" and select print instead of "use HP App to print"

 Do not call any phone number revealed in any video or site.

Wi-Fi Direct can be used to avoid configuring the router. Watch this: 2800 2810 2842
Wi-Fi Direct is explained on page 11 of the User Manual, this Wi-Fi setup avoids configuring the router.