https://www.hollywoodreporter.com/live-feed/what-we-do-in-the-shadows-spinoff-series-cw-hbo-max
Under the agreement, The CW will get the first airings of the show, which is set to be part of its summer schedule (a premiere date is still to be determined). HBO Max will stream episodes a day after their broadcast debut, as will the broadcaster's ad-supported streaming platforms.
July 11: https://bloody-disgusting.com/tv/3663413/shadows-spinoff-series-wellington-paranormal-getting-us-premiere-july/
“Wellington Paranormal” has been acquired by HBO Max and The CW, and the series will premiere on The CW on July 11, 2021. It’ll then be available on HBO Max the next day.
The half-hour series follows the aforementioned duo, as well as Cori Gonzalez-Macuer’s Nick, as they try to keep Wellington safe from various spooky beasties.
The third season of “Wellington Paranormal” just recently launched over in New Zealand, and we’ve been told that filming on a fourth season is already underway.
Extended trailer https://www.youtube.com/watch?v=Gmn_Tvrt2rQ
I watched 3.01, not that funny and nothing like What We Do in the Shadows.