User Activity

During and after an auction in the bidding historythere will be a couple of numbers on the same line the buyers user name. What do these numerals and letter mean?exampleSusas [*********]bva. 63dMGM [**********]. 48d Any info much appreciated
I have a buyer who has paid for their item but despite several emails hasn't collected. Storage space is a problem. What can be done in this instance.
Curious how people manage the recordkeeping of inventory and sales financials. I have an Excel spreadsheet that would be a kilometre long if I printed it out! I have a working knowledge of MYOB but wonder if that is overcomplicating things.