OK I managed to work it out however I must state that this process is not clearly laid out, well not that I could see. I signed up to Hostinger, then installed Cloudron-on-Ubuntu and then discovered that I needed to create these 2 accounts. Then discovered that on the free tier I can only install 2 apps before requiring a subscription for more.
If I knew this previously I might not have chosen Cloudron, and obviously I did not perform sufficient due diligence for the service so I'll lump this for now.