SmartThings app interfering with DTV tuning memory

[Alba60]

Q80T worked flawlessly from box - auto tuned as expected using DTV terrestrial aerial connection. The next morning tv says NO SIGNAL. Did usual troubleshooting - retuned - the TV couldn’t pick up the terrestrial channels - stored signal data recorded at 0 to 5% for both strength and quality. Connected old tv - it was still working fine. Samsung support completely clueless, they were only able to repeat everything that I’d tried and had already told them didn’t work. Completely randomly later in the day I opened SmartThings and noticed that the link to the TV had been lost. I established the link again and hey presto DTV stored channels are again accessible! This is not a fluke ...... the symptom and remedy have cycled through three repeats today! Weird or what! Anyone else with this issue? Any fixes?