Moving from 30 day trial to Basic Plan

Hi all My free trial will end in 10 days. I'm pleased with the hard wired door bell and want ot keep my trial videos. A few have mentioned problems on going to a plan.. i.e losing their recorded videos and getting their plan cancelled at the same time.. They are not getting a refund (quickly) but I would not want a refund.. I just want to transision into a paid plan.. Is there something I'm missing or need to know in advance.. I don't want the same scenario happening to me. Help please.