Hello
I navigate on your site and I don’t understand what you mean by
"when I navigate to my "contact" page all the url codes are changed"
Do you mean you don’t have any "sub-menu" when you’re on your contact page (and you expected to have one)? or do you mean the links inside the page itself don’t reach the right target page ? Or anything else ?
Try to explain what "normal" behaviour you’re expecting, and how your resources are organised (in the resources tree), give a bit more details on how you built (and/or customize) your menu (Wayfinder ? other add-on ?)...
Give us some details on your version (Evo ? Revo? release ?) and on your configuration... It’s pretty impossible to give you an answer with only "have a look at my site, there is something wrong" ...
If you want some of us try to help you, you should give the max informations about your environnement and the add-ons you used, and eventually the code (or part of it) you used...
Cheers