Don't worry, you have outputted the gerber files correctly.
1. Please make sure you are sending them Gerber/Drill files (*.gbr, *.pho, *.drl) , and not some other design files etc.
2. EasyGerb outputs correctly to Gerber 274X & Fire9000 Specifications, and the results will load fine into any commercial quality CAM tool. Most likely your vendor is either using "outdated" CAM/Gerber software that does not fully support the Gerber format standard or is not familiar with advanced gerber features such as Polygon Fill (G37,G36), Composites (LPC, LPD).
Feel free to provide us any specific information from your vendor as to why they are having a hard time, and we'll be happy to assist them.
I have use EasyGerb4 in ACAD and it works. When I open this file in Gerber viewer 2.6.0 then I see all the layers.
But, the vendor they can't open these gerber file's. I have try all the settings.
Whats the problem ?