You can’t compare this to buying a car or going to the grocery store, this isn’t retail. Based on the services you offer you may not come across the circumstances I mentioned because yours is pretty much straight forward.
I’m also not saying that notes can’t be taken, however there is a reason why even Fiverr puts “The buyer agreed that the information provided is accurate and complete. The buyer is aware that any changes, requiring your approval, may be subject to additional costs.”
Here are two scenarios that happened to me over the last five-six years and you may get my point from this:
#1. I had a lengthy discussion with a buyer about a project, an animated infographics presentation, we went through all the particulars, discussed it at length, he provided about 5 files and a storyboard. Everything seemed like it was good to go. I sent him the custom offer and in the requirements field he put “sent in chat”. I didn’t even bother requesting the files to be reuploaded and proceeded . Upon delivery, I get a modification notice “Why didn’t you use the graphics in the pdf?” … at which point I am confused… I asked “Please note , unless I am mistaken, no pdfs were attached”. Sure enough the buyer comes back and apologizes, he didn’t upload the pdf, we worked things out in the end but my point for this is; had he checked to make sure all the files were uploaded for the project ,this may have been avoided, sure he might have forgotten it as well but since everything would have been in one place versus all the files he sent scattered, he may have noticed.
#2. I had a buyer who I discussed a logo animation at length with for a particular style of glitch animation, after about 10-15 minutes of communication, examples and references I sent him a custom offer and saw that the requirements were filled out almost identical to the discussion. Now here’s the thing, in this case (which was about 6 years ago so I learned my lesson from this); the buyer changed the reference to the agreed style of glitch he wanted to something else, he didn’t inform me otherwise except that when he pasted the requirements, he changed the reference video. I went ahead and animated according to the agreed way in the chat. He naturally asked for a revision and said “Why did you animate this glitch, I wanted the other one…” Me being confused as I know what I delivered was what was discussed, I then found out he changed it after the order. Now , morally the one I delivered was right as that was what the offer was for, but interestingly, because he made the change in the order window then that’s what was to be done.
For you, I guess it would be imagine you downloaded a document to translate from the buyer after agreeing and put it in a folder to work on. Then the buyer accepts the custom offer you sent and reuploads the file but doesn’t tell you that he changed a paragraph inside. So you go ahead and work on the one he sent and you agreed to in chat. Do you see the complication? This is why all final files should be uploaded in the order window!