pay to blog not activating blog after paypal payment

A user has used the paypal button on the pay 2 blog screen after their blog trial expired but the blog didn't get extended.

this is what I got from paypal

Dear andrew bailey,

Beth Day just signed up for a subscription to Comluv.com Blogs Blog Activation.

xxx@gmail.com's first subscription payment, for $5.00 USD has already been sent to your PayPal account.

Reversals:stuck_out_tongue:lease be aware that your payment can still be reversed, (e.g. if it is subject to a chargeback), even after you have posted the item to your buyer. Complying with PayPal's protection programmes and following the trading guidelines, in our Safety Advice Centre helps to protect you from things like chargebacks.

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Subscription Details
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Date of Sign Up: 6 Apr 2010

Subscription Name: Comluv.com Blogs Blog Activation

Subscription Number: S-4JE08351063119846
Item Number: 12

Custom Number: 12_USD_1189

Subscription Terms:

$5.00 USD for each 12 months

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Subscriber Information
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my pay-to-blog-paypal.php is version 1.5.2

can you tell me what can i do to check it?