Wrong device showing in My O2 and Mifi will not connect

[Anonymous]

I have an O2 sim in my TPLink mifi device which stopped connecting(kept saying signal excellent but out of range??) so I tried it out in another device.  This new device is still showing as my current device in My O2 details but I am not using it now.  The sim is back in my TPLink and still not working and now also not showing at all as my device on My O2.  How can I change my device back to TPLink and does anyone know why the mifi would be showing as not in range when it definitely is in range?  Thank you for any helpful assistance as it's had me miffed all day!

[MI5]

Don't worry about it not showing in your MyO2 as that won't affect anything.
One of my phones has never shown as a phone, it just shows the number attached to it.
Where are you seeing the out of range message displayed?

[Marjo]

Hey @Anonymous welcome to our forum. Please do let us know how you're getting on with this, in case the community could help troubleshoot the issue with you?