Many problems currently with Paypal site. Just one to start with: the site claims that my mobile phone number is not authenticated (or some such term); yet I use it to login and respond to the identity verification check sent to that same mobile phone!
I'm sorry to hear that you're having these issues. You may need to confirm your mobile phone number. If you have done so already, you can view steps on how to do this by visiting the Help Center article here.
I hope this helps!
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