@bamazy, I really want to help you. But unless you do the tasks I ask, I don't know how much more help I can be?
1. have you put the MinOSVersiojn in your build.settings yet? This will hopefully mask the pages of Warnings coming from the Appdoeal plugins. If you have, where is the link to the pastebin of the "entire" console log that I asked for? You have to build for the store so I can see the errors and the messages that led up to the build failure.
2. Have you tried building the HelloWorld sample app using your provisioning profile and tried to upload it with Application Loader from Corona's build options? This is important to rule out problem in your project or with your build.settings or plugins that you're using. Please let me know the results.
With out these two I can't provide you any further help.
As to your questions two posts up. Xcode should probably be logged in with your Apple Developer account. Logins to the web portal for App Store Connect and the Certificates, IDs and Profiles site probably doesn't matter. That's all setup and once you download a valid provisioning profile for the store, the websites are not used again.
You do need to be logged in to your developer account inside Application Loader, but the error you're showing seems to be happening before you get to Application Loader.
Keychain Access keeps track of your public/private keys (I.e. certificates). You may need to be logged in there to get your certificates installed correctly.
Generally Corona will check your provisioning profiles to make sure they are valid (built against a valid certificate, if you choose upload to the App Store it's got to be a valid distribution profile, etc.). Its the last condition that is failing.
In one of your screenshots above, you posted the contents of your provisioning profile folder, but it looks weird. First it's case sensitive so it should be "Provisioning Profile with capital letters. Please open a terminal and paste in this command:
ls -l ~/Library/MobileDevice/Provisioning\ Profiles/*
exactly like that and then copy/paste the results back.
Please do **all** of this and share the results. Multiple posts for each step would likely be helpful.