Well, this is too little too late, but there is a built in bitlocker on windows 10. Did you look at the support pge before you decided on this option? Nope, no-one ever does! Always look for the support first before jumping into this stuff! Here comes the hard sell, they will sell you a fix! Oh, that is a stable business model, if your files are important enough!
What they mean by your files are switched, they mean that a KEY is placed on the C drive. If you had to replace the C drive, or if you re-imaged the C drive, the key would just go BYE BYE, and there would be nothing you can do about it!