on 03-10-2020 01:27
on 03-10-2020 08:07
on 03-10-2020 08:07
on 03-10-2020 08:47
on 03-10-2020 08:47
Do you have MMS enabled in message settings?
As they are chargeable, if you have a spend cap, it will prevent sending too.
You can call O2 to remove or adjust a spend cap Guide: Coronavirus Community Help and Support