Hello there !
In an attempt to cleanup some bits of our infrastructure, we noticed that we have many nohost.me / noho.st / ynh.fr domains registered which appeared to be abandoned and in particular are still using a pretty weak md5-algorithm.
The use of this algorithm was fixed in an automatic migration from January 2018 (YunoHost version 2.7.8) - about 2.5 years ago. This indicate that such domains are either abandoned, or used by people still running YunoHost < 2.7.8 (which is not even the latest 2.7.x, sigh).
Anyway, we will cleanup these old domains after August 1st, 2020.
Othewise, we can only encourage you to upgrade to YunoHost 3.x somehow considering version 4.0 is around the corner …