@andrew.p You are right, Snapchat requires your phone NOT to be rooted
when logging in. I'm not a Snapchat user, but AFAIK it doesn't care whether your phone is rooted or not once you are logged in. So in your case your best would be:
a) Either live with the stock ROM (heck, I just like CF.lumen and AdAway too much to do that!)
b) Install a custom ROM and then hide the root on your phone when logging in to Snapchat.
If you want to be able to install Snapchat and Fulmics at the same time, your best bet is:
1) Install Fulmics ROM with the MagiskSU option in AROMA.
2) If you are an Xposed Framework user, avoid installing it till you log in to Snapchat.
3) After installing Fulmics, go to Magisk Manager, Enable Magisk Hide and Core Mode, and then restart your phone.
4) Install and login to Snapchat.
5) After getting everything done, you can revert the changes you have made in Magisk Manager.
BTW, Fulmics ROM
7.6 is
fully ready now. After negotiating with xpirt on the full list of changes, the update is really finalized now. I'll test the ROM on my phone tonight, and then will post it at XDA tomorrow
Working with xpirt was a pleasure for me; my gratitude to him for this awesome ROM as well as allowing me to update the ROM (and helping me in a few points in the process!)
See you guys tomorrow!