1st of all, if your using Red, Yellow, White cables from your DVD to the TV, "component" is the wrong input setting. These are "composite" cables and you need to be set on "Video" to receive these signals.
As for your "round batwing", does the internal element rotate? HD signals are very directional so, if it rotates, does it have a signal strength indicator? Have you tried rotating it while checking the signal indicator (assuming it has one)
Now , let me think some more about your TV viewing issues and if I come up with something else, I'll repost. Good luck!
Days camping (2016)----181 days
Days camping (2017) --- 82 days
2016 Wildcat MAXX 28RKX (33' TT), 2007 13' Scamp
2015 Ram Laramie Hemi, w/air suspension
30 years RV'ing
11 different RV's