Upgrade for Pushsafer-Binding to OH 3

Hello,
is there anyone who upgrade the “Pushsafer-binding” from OH 2.x to OH 3?
The developer wrote me in a mail that he had no time to upgrade.

its available for manual download and installation until the add-on is published.
Take a look at: https://www.pushsafer.com/en/openhab3