Buyer/Seller Feedback Questions

Hey all, I need some help figuring out the feedback option for buyers and sellers. I have sold some stuff to members recently and have gotten a couple confirmation requests, and have clicked on them to confirm, but I don't know if they have gone through or not. I still have one unconfirmed prompt that I don't know how to address.

My questions are... can I as a seller leave feedback to members who have purchased items from me??. I have a number of transactions that I would like the buyers to know that I appreciate their business and courteous communications, but I can't seem to figure it out.

Also, how can I access this unconfirmed prompt that has been on my inbox page for a couple weeks now?? I confirmed the message when it was sent, but for some reason, the prompt is still there. I don't want any of my purchasers to think that I am not responsive to their communications, and I would like to thank them all, but my limited computer savvy is keeping me firmly planted in the 70's!!! (which ain't a bad place!!LOL!!!)

Help!!! and thanks for helping this oldtimer sift through the rubble that is called progress!!!Geof