Can't update OttoFMS in Ubuntu

The script returns this:

sudo curl -sSL "https://appupdates.proofgeist.com/ottofms/install-scripts/install-linux.sh" | bash
bash: line 1: syntax error near unexpected token `newline'
bash: line 1: `<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">'

Now it is working, sorry, I tried couple times and wait several minutes.

also, try using
sudo curl -sSL “https://downloads.ottomatic.cloud/ottofms/install-scripts/install-linux.sh” | bash

as per docs…