I have read in a local magazine (Chiangmai Life) and I have been told that the Chiangmai Immiration Office will not accept the 40k income or 400k bank account options regarding the marriage visa extension extension. They say you need both, even thought the rules say otherwise. Has anyone had any problems with this?

That is incorrect. The probably got that from a copy of a handout from immigration that says that.

In reality they accept either.

The hand out says and when it should of said or.