Samsung S9+ stuck on 'Keep read only' install step

Hi @Admiralbenbow, welcome to the /e/ forum. Your log shows
Uploading RECOVERY -> RECOVERY upload successful
twice, then multiple

wait-for-recovery

So … did TWRP install?

This is the Keep read Only screen on the device. Did you see it?
Keep-read-only

  1. If yes, did you follow the exact instructions of when to connect or disconnect the USB cable, try a different cable just in case, or think about doing a manual install following the last (easier !) section of this tutorial, picking up from 8) Install /e/ with TWRP [HOWTO] Install /e/ on a Samsung smartphone with Windows easily

  2. If no please read Know your hardware - Samsung #Easy Installer and also #Your first boot into TWRP then try again !