Hi Bittyboy.
I've always used the After Sales Log (ASL) to communicate with buyers unless they've asked me any questions before the purchase. If you look back at your first sale you'll see that the ASL drop down has an "Ask (buyer's name) A Question", which can be used and is "on the record" if there is any query later on.
When the buyer has paid and I've checked Paypal to make sure that they actually have paid I always "Ask a question". I thank them for their purchase and payment (often with buyers using Ebid for the first time they can be uncertain of what they're doing, so this confirms to them that they have bought and paid for the item). My dispatch is "Next Day", although I often post it earlier and I confirm that the item "Will be in the post tomorrow".
When I've posted, usually RM 2nd Class and have the POP, I add the details and RM Reference Number to the ASL. I add that "Your parcel was accepted at the P.O at (say) 11:01 and is on its way to you." Until I reached 100 FB I would also add something like "Your FB would be greatly appreciated on safe arrival" and again thank them for their purchase and perhaps something like "... hope to see you again some time".
I ALWAYS leave FB for every buyer, that's how I can say that I've sold 156 items (not the 102 that have left me FB) and future buyers who care to check out my "FB left for others" will see that too.
Most never reply, those that do mostly just answer with "Thanks" or "Great" and only about 60% even leave FB. I wonder how many even read their end of the ASL ! But I've been helpful, friendly, kept them up-to-date with the transaction and everything is there to be seen by Support if there is any sort of dispute (I've never had any disputes so don't know what happens if there is one).
If you are thinking of going back to selling elsewhere. I do wonder if you're now seeing obay through "rose tinted spectacles" ? Yes, at one time you got regular sales there, (so did I) but I do distinctly remember you complaining many times that they had dried-up and that obay was 'ghosting' your listings. That, because you refused to 'Sponsor', you had sold virtually nothing for months on end and would look at alternatives ? I remember because I was saying the same things on the same threads over there.
Another good point about selling here is that, unlike obay, Ebid does not try to claim that it has exclusive rights to your listings and sales. For years, until my sales here out-stripped those on obay and my main efforts were concentrated here, I listed BIN items (never run auctions on both sites together) on both at once in the hope of putting fliers in with any items that I sold there. So I would advise you not to delete your items here and make use of obay as a billboard if you so wish.
I have to say that I still haven't seen you on PYA Forum or that I can see any editing of your titles to try to get better visibility on GS as I recommended only last Sunday. I haven't even tried to look for you on F/Book, Pinterest or Blue Sky. I always made it clear on the obay boards that this is NOT obay and if you try to use it like it is, you will fail to sell here. You have to use your imagination and a bit more effort here. I apologise if that sounds offensive, it isn't meant to be, but to give ebid a fair chance, only you can make it happen. IMO if you keep complaining about lack of sales too often the most likely outcome will be that this thread will be deleted, which would be a pity as there is information that just might be of help to others.