Have you done a site search for BlueDo? And is it pronounced Blue - doo or Blue - dough (rather like Popeye's nemsis)
I have seen this company name quite a few times on the site, always with recommendations to find particular things there, and have never noticed any warnings about buying from them.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
