Two questions about Tapo L930-5

First it's dimmable only if you have an account on cloud or you can dim it through the app? and if you need the cloud how much is the cost?  I found on net info only for cloud    Tapo care for camera and nobody says about cloud for led strip.

And second i read in forums two opinions. Some says that you can cut the strip and solder wires  to put the second part of the strip for example to the other side of a window, and some others says that you can not do it. Has anyone tried to solder it??

Thanks.