Very odd. Is the Roku powering off after you use it? If not, I'd go to Settings>System>Power and make sure its configured properly.
Power User (film maker)
Mill Valley, CA
Jonathan
Roku Ultra 4800R; LG OLED55B7A, ONKYO TX-NR636, Panasonic Blu Ray, Definitive Studio Monitor 450 (L/R), Definitive LCR 2000 (center), Definitive 10" sub-woofer, Definitive surrounds. Motorola MB8600 modem. Asus RT-AX68U WiFi 6 router. Western Digital Power Line network adapters