Never ask about updates. Let these guys do their thing. Most of them have jobs, wives, children and other things outside of XDA. I'm most certain when something of substance is there, we will know about it.
I'd prefer a full install that requires a wipe. Less issues that way.
If I was you, I'd reboot to BL flash the factory image, than start the TWRP process again. You missed something or messed something up. This is an Alpha build and will have bugs and instabilities, no offense, but not really meant for rookies/noobs...
This is your best friend. Worth every penny. 3852397
Here's how to uses Google's adoptable storage which Samsung left out. HTC does this right out the box. No Root needed. Just ADB.