Unable to Log Into LG TV App Store Due to Constant Login Errors

I've been struggling with repeated login issues on my LG TV’s app store. Although I managed to access it briefly before, the system logged me out shortly afterward, and I’m now repeatedly encountering error messages each time I try to log back in. My LG TV is still under warranty and less than a year old, but this issue has become truly frustrating. Despite having followed every instruction and attempted various troubleshooting methods, I continue to face the same problem. It’s disappointing that I can't use the full features of a new device. I need LG to provide a solution or repair for this ongoing issue as soon as possible.