CDW and TP are not an issue if the rates include them. I wouldn't disable them generally since UK rates tend to be better with them included - also if based in UK and wanting to book in USA, definitely ensure that they are enabled
If I use points in USA, I book using a rate that includes LDW and so that is included in the points booking
Are you trying to book using the website where your membership is based? if not make sure to use that