There was another paper updated shortly afterwards (first published in Jan 2019) here:
https://arxiv.org/abs/1901.01540
It puts the value of H0 at 75.2+-(39.5;32.4) using standard sirens.
Researchers expect a 2% measurement using this technique in 5 years.
https://www.researchgate.net/publication/328344162_A_two_per...