LEGEND is the follow-on project. https://legend-exp.org/

So... no luck this time? But they know how to look better next time? I think? I'm bad at reading science papers.

Yeah, they didn't observe the decay, but set lower limits on the half life of the decay, which translates into upper limits on a neutrino mass. Next time will mostly involve getting more germanium 76, but also improving the techniques they use to beat down backgrounds.

Just to add for reference, the strongest bounds (for any NLDBD candidate isotope) are from KamLAND-Zen using Xenon-136, also last year: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.13....