APN for Archer Router

[simbo2603]

I have an EE Sim card on a contract.

What is the correct APN for an Archer MR500 4G router?
When using the default settings (presumably created when I inserted the SIM card)
{APN everywhere,  username: eesecure, password: secure, Authentication: CHAP }
the connection is very hit and miss. At the moment, it won't connect at all. 

When I switch to the APN settings back to the settings I used for my old Smarty card
{APN mob,asm.net,  username: [blank], password: [blank], Authentication: None}
the speed is great (100MB/s) and the connection is stable.

in both cases, the PDP type is IPV4.

[XRaySpeX · Accepted solution]

Follow  EE APN Settings: Where to find them as close as you can.

You seem to have the correct ones for EE but try Authentication = PAP.