@mnm_06362 Hi there & welcome to the 3Community. You are correct that while in Ireland your data is unlimited. When you view your allowances on your My3 account if your plan has expired then your allowance will also show as expired.
For example, if you topped up on the 3rd of September your plan would be active for 28 days until the 30th of September. On the 31st of September, your plan is no longer active so will show that the allowance has expired. Once you top up again by €20 a new allowance for unlimited data will be allocated to you.
Hope this clears up the confusion, if you have any further questions let me know 😊
