Hello.
Packages older than 2.41.0 are may crash due to starting of development
transport protocol SSU2, which is not handled by old versions.
That's why nothing can be done with debian-provided packages with old
versions.
Use our community repository instead for now, because our Debian
maintainer didn't updated package for half-year (still 2.39.0 -
https://salsa.debian.org/yangfl-guest/i2pd), I can't take maintainement
of package here due to requirement to use real name and contacts, and no
one wants to take maintainership.
The only way to make it work - update package in all distributions to
2.41.0.