VPS site problem

we have site create magento stores and we have account in bluehost now we are in hostgator the problem is when costumers create store the admin and store are not available . we have problems with dev and he didnt replay the idea for this site : there is main magento admin and main magento store if costumers fill blanks in our site homepage then he will automatically take copy from main magento admin and main magento store . this action was work but it didnt now !! i have old files on bluehost it is useful cos it was work when site was with bluehost . but there is many changes in the site when we with hostgator . we want you fix this issue or see what miss in hostgator account with bluehost account if you test the site you will know the problem . i hope you understand the issue .