@Tod ********
I am talking about the Vietnam e-visa. I was already in Vietnam with a visa on arrival by the time the e-visa was finally approved. The e-visa was useless to me due to the extended processing time resulting from not having my middle name in the system the first time round.
Considering my visa on arrival was valid for 30 days single entry and the e-visa for only 27 days (as it came through I think it was 3 days after I entered the country) it's quite obvious that I would ignore the e-visa as I can't have 2 visas at the same time.
The point of this story was to let Ivan know that generally, certainly in my experience, Vietnam lets you make changes if you make a mistake with your name. However, they will drag out the processing time if that happens.