Okay, that very clearly explains your problems. With that liquid, you basically destroyed the cooler. You should also urgently disassemble, inspect, and clean your pump, if that is still even possible. With this liquid, you have essentially contaminated your entire cooling loop.
You can try sending an email to
info@alphacool.com. The colleagues there can check whether there is any possibility to send you the O-rings and the jetplate. But honestly, I almost doubt that they will do so. Still, it is worth a try.