Hello! I have an onn. 7in. Android 9 tab w/keyboard that used to have a similar problem. If your device uses type B charging [ the kind that only plugs in one way] there may be an issue. This depends on how many times you unpluged/plugged your device in, what cord you use, and what charging block you use [charging source] Because you said that charger registers better when you turn it a certain way, it may be the charging cord causing this. This is common with type B chargers, as they tend to wear out over time. Try changing the charging cord. Use a newer charging cord, Dollar tree tends to sell good charging cords [I still use their cables, no problem] and see if it solves the issue. If this does not solve the issue, try a different charging block. Every charging block is different, outputs different voltages, and wear out over time. Like charging cords, Dollar tree sells good charging blocks. Use that to see if it solves the issue. If that also doesn't work, I would not know what to do after that. This is the best that I got for repair.