Mask Configuration Problem

When attempting to use the Selmask or mask tools, I can only create perfect squares or ellipses I want to be able to use the mask and create a rectangle. I cannot figure where the configuration is to free form this mask I am using an android galaxy z fold 4 so this is an android OS that I am working with. The Nomad version is 1.84.

While using the tools, make sure this button isn’t on:

Thank You this was giving me a headache.