1. we have disabled auto upgrade because upgrade utility asks for login details to update the database. Enable it later if it works
2. Select Timezone : America/New_York
3. PHP REQUIREMENT LINK : https://www.admidio.org/download.php & composer.json
4. We don't exclude the installation folder i.e /adm_program/installation/ from install.xml, as the script needs some files from installation folder. 
Also it's not mentioned in their documentation to do so.
5. UPGRADE DOCUMENTATION: https://www.admidio.org/dokuwiki/doku.php?id=en:2.0:update
6. We have disable the languages since 5.0.x version because it was not working in manual as well. Check in next version if it works and add it.