Can't send messages but can receive them

[Kate4]

Hi,
My messages are not being sent, but I can receive them. They show up sent from my end, but my contacts are not receiving them.
I've tried restarting my phone, clearing messages cache and data but nothing seems to work.
Any help would be great.
Thanks

[BasilDV]

Hi @Kate4

Are you able to call out as well?

Kindly shoot me a PM with your account details for further checking.

BasilDV