Were you ever able to send texts?
Do any texts send at all?
Are you sure that your membership/add-on text allowance has not been used up?
Your My48 account page will tell you.
Are you texting Irish mobiles or other numbers?
Only Irish mobile numbers are covered by membership/add-on text allowances.
Texts to other numbers (e.g. international numbers) are charged to your cash credit balance.
If necessary contact 48 support for more advice.
Hope this helps.