Companion problem resurfaces

The issues that I have said are well known. As far as ADB is concerned, I am hopeless with command-line.
Am I the only one experiencing the problem or is it widespread?

Try with Niotron:
https://builder.niotron.com/

Companion App:
https://companion.niotron.com/download/main/NiotronCompanion.apk

First time using Niotron.So I'm not sure I did everything right. But got into the builder ok. And downloaded the Niotron Companion ok.
Transported an AIA over to the builder ok.Came up with an error 'Unable to find...' Same as MIT. Tried to build. Came up with an error.
Got white screen on Niotron companion...Same as MIT

Share your project that you are having trouble with.

It seems your project is corrupted.
Post the aia or send it to me via PM.

I think I may have solved the problem. But I have more work to do. My internet is down today due to the power being off. I am using my phone as a stopgap. I will post my results later.
Thanks for all the help. I may need to use it later.