Fine tune timing changes won't apply!

I have made timing files using aeneas and then when I try to go through the process of fine tune timings, none of the changes I make are registered/saved in spite of clicking the save button at the end of the process for each chapter.
Then when the app is built, the highlights are really off and don’t match the audio, and then if I pause and play again, the highlights would continue as normal but the audio would jump back to the beginning. For example let’s say the highlight is on verse 10, and I pause the audio, when I push the play button again, goes back to verse 5 and yet the highlight goes on to verse 11 and just keeps going.
I have tried downloading the latest version and update it but it has not fixed the issue.

thank you