@ΰΈΰΉΰΈ³ΰΈΰΈ ***********
GO there today.
I am NOT trying to scare you BUT I have seen people who didn't show up on time for their under consideration stamp at Chaengwattana for their extension based on marriage have the under consideration stamp cancelled and sold a 7 day get out of thailand stamp where they had to start the whole process over.
It is totally up to the immigration officer 100%. You have no say in the matter and they don't care in the least why you didn't show up there on the date your stamp clearly told you to be there. π
Good luck, there's no much more to be added to this.
One last time GO today