It can yes, but that's the risk you take with any tuning device. We've got plenty of reading around that topic here. I would start here:
https://www.ecodieselram.com/forum/forums/ecodiesel-performance.28/
Welcome! I've moved this into the General Discussion area, hopefully you'll get more traction! But yes, have a search here on the forums.. I know I've seen one or two for sure.
Welcome! We've got a few members with lift and leveling kits here. Check this section:
https://www.ecodieselram.com/forum/forums/ecodiesel-wheels-tires-suspension.25/
When headed to the dealer, it's always a good idea to tell them NOT to update the truck. Some even go as far as to buy a "DO NOT...
Welcome, as mentioned, we have some videos here, and even some on youtube for the standard oil change, fuel filter change, etc. It's all easy and saves a ton of money!
I noticed in a post he said he's pulled the OBD flashing for the EcoDiesels off the website for now while they work through some bugs. Hopefully you guys can get it figured out.