That’s good advice and absolutely worth mentioning to eliminate as a potential cause of the issue.
I thought the OP’s issue was that the players continued to work for playing discs, but that the built-in apps for streaming services became unreliable after short periods of time. And that’s...
Every BD player I've purchased, from the expensive Oppo to a middle-of-the-line Sony to a cheap LG have continued to work since their purchase date, in terms of playing physical media. But the app usage has never been reliable on any of them.
I would join with what John Rice is saying and...