I've got your back, @info1406.
Currently, QuickBooks Online (QBO) Ireland doesn't support PayPal or other third-party app integrations. For now, QBO offers an online banking connection for your financial accounts, like Paypal.
For more info about it, please review this article: Connect bank and credit card accounts to QuickBooks Online.
You'll also want to learn more on how to reconcile your account to keep your books accurate.
Feel at ease to add your questions in the comments below. I'd be glad to answer them for you. Have a good one.