I purchased a Roku Express+ on 7/31/20. Was able to connect it to my Sharp TV and it was working ok. At times the remote would not work when I wanted to shut the system off for the night and I would have to re-pair the remote to be able to turn the tv off. Now it will not control the tv at all. The Roku will come on but not the tv unless I use the remote that came with the tv. I am then on the Roku home page but the remote does not have any control over the system at all. I have tried re-pairing multiple times, have checked all connections, etc. but no success. Help!