currency, item name or number or quantity mismatch: IPN item_name (Associate+Member+Windsurf+Locker+for+Matthias+Roschke) does not match basket item_name (Associate Member Windsurf Locker for Matthias Roschke) nor their trimmed sizes for IPN (Associate+Member+Windsurf+Locker+for+Matthias+Roschke) and basket (Associate Member Windsurf Locker for Matthias Roschke)

The bug is Paypal-side, and Paypal is aware and hopefully working on it: they replace spaces by + in the item_name sometimes!

We have made a workaround for this Paypal.com-side bug, and it is available in our downloads with the latest nightly release.

This is same issue as reported 3 weeks back here:
www.joomlapolis.com/forum/255-developer-members-support/236351-paypal-ipn-item-name-suddenly-adding-signs-resulting-in-mismatch

I am making PayPal.com Developers Support aware of your thread here, but you should also contact your Paypal.com customer-manager (log-in to Paypal.com then click Support at bottom).

I have got reply from Paypal.com technical support: The transaction you have mentioned is an old one from April 3rd, which occured when Paypal.com had the bug.

You may still be able to replay the IPN from the Paypal.com website (with now normally fixed item_name): In Paypal.com logged-in Tools : Site-map: IPN History, then select longest possible period for the list, and if you see that transaction message (txn_id is in your PDF), you can checkmark it and click Replay IPN button.

Otherwise, you will just need to activate the subscription manually in CBSubs in CB User manager, edit the user, and in the Membership tab activate the subscription by saving the user in your CB admin area.

btw. I have marked-up your PDF attachment as "CONFIDENTIAL" now as it contains private details