The Timekoin Team has now released server version 4.1x !!
The new version now works with older PHP versions (5.x or higher) but support for PHP v7.2 and higher is recommended for security and speed reasons. The new version is faster and more secure than before. The speed increase will be most noticeable for Raspberry Pi users. For those running the previous 4.0x version, you can actually update within Timekoin itself for little downtime during your upgrade. We try to integrate as much user feedback as possible between each release.
Find it in the download section link at the top of the website.
Thanks to all those that sent in bug & performance reports, this is how version 4.1x is the best version yet of Timekoin Server to be released.