What this would means is that our internal security system has delayed your withdrawal while we review it. For security reasons we cannot provide the exact reason why this happened, but possible reasons include:
You may have received a higher-than-usual amount of money into your account recently
You may have started selling more expensive items
You may have started to sell different items
You may have made changes to your account profile (such as adding a new address or a new bank account)
You may have accessed your account differently recently (such as logging in from abroad)
You may have received a higher-than-usual number of chargebacks, refunds, complaints or claims recently
You may have reported unauthorised activity on your PayPal account recently
You are using a mobile device with the location switched off.
Keeping the PayPal environment secure is always our utmost concern so we try to identify patterns that don't match your usual activity. Many banks and credit card companies work this way too.
Since you are finding that this is happening very often it might be a good idea to get in touch with us so we can look at possible causes for you.
