As spoke on the phone today, due to K.Kritchakorn never been travel to Europe before and the period on the invitation letter is 45days., this is too long period and I'm afraid that there will be a problem for his visa, since this is his first time apply.
K.Kritchakorn has confirmed that the exact date for traveling is 20-27NOV., would you please ask DeSter BVBA to change the date to 20-27NOV.
I'll also arrange all documents to match with to the date 20-27NOV.