Hello @Keepingitreal,
Welcome to our community help forum and thanks for posting here!
I am happy to help you with your inquiry about lock option for PayPal app here. You can go to the settings in your mobile device and check for the security options to set up the lock for your PayPal application. You can also try our 2-step verification feature which gives you an extra layer of security. Once you activate this feature, we'll send you a unique, random 6-digit access code each time you try to log in. Simply enter this code to access PayPal.
Best wishes,
Bindu
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