Hi, and thank you for reviewing the Timberline XL. Typically, if a grill loses a connection that it had previously maintained then it should simply come down to finding what was changed. Either there was something externally that affected its access to the network, or possibly a change with the grill itself. As for the potential external causes, this is usually related to some modification of the WiFi or phone that the grill was paired to. But regarding the latter, you can easily verify this by trying a different compatible device and seeing if you get the same results. On the grill side, anytime your Traeger drops the connection you’ll always want to go through the Forget Network steps first before trying to reconnect. For the new touchscreen models like the Timberline XL, this is done by going to the Main Menu and selecting WiFIRE connectivity > WiFi Info > Forget Network > Yes. Once done, try the pairing process again. In reference to the temperature and pellet use, for this to occur suddenly after working ok previously is usually indicative of a problem with the pellets. Compromised pellets are the #1 cause of temperature issues, and can be the result moisture absorption, or even dust buildup in the bottom of the hopper. A quick verification or pellet quality is breaking a few between your fingers to see if they either easily crumble apart, break cleanly in half, or something in-between. If it is anything other than a clean break, you may want to try new pellets. But if the above steps don’t work, or you would simply like some help with going through them, please give us a call at the Traeger support line. Not only can one of our agents assist with connecting the grill, but they can also see why your temperature performance has changed and help get it back running the way it should be.