Hi there,
Thank you for reaching out.
We understand a triumph isn't recording your progress. We're sorry to hear of this, as we can imagine the impact this may have had. If this triumph fails to record your progression again, then please consider recording a short video which demonstrates the triumph not registering your progress.
If you record such a video, you can upload it to a site like Imgur or Youtube, and share a link to it here. We'll then investigate this.