Hi Nathaneo,
Thanks for using the forums to get this looked into with your mobile service whilst abroad.
I am sorry you are not receiving texts or phone calls with passcodes to access your PayPal account.
The first thing I would do is see if you have WIFI calling enabled on your handset - this can sometimes interfere with receiving verification texts. It can still take some time for the texts to come through after switching this off.
Can I ask if this issue is only occurring with PayPal?
Do you have a friend or family's phone to swap the SIM card in to see if the text comes through? If it does, it may mean your SIM is faulty and you'll need to get a replacement when you're back in the UK.
Please let me know how it goes.
Thanks,
Megan_L