The hex-eCerto.png was composed by Jan Lisec using <https://connect.thinkr.fr/hexmake/> and incorporating the following icons from Freepik.
As stated on their website, the use is free when the respective links are included in the software.
<a href="https://www.flaticon.com/free-icons/chemical" title="chemical icons">Chemical icons created by Freepik - Flaticon</a>
<a href="https://www.flaticon.com/free-icons/report" title="report icons">Report icons created by Freepik - Flaticon</a>
<a href="https://www.flaticon.com/free-icons/certificate" title="certificate icons">Certificate icons created by torskaya - Flaticon</a>

The BAM logo files were copied from the BAM website.

All pictures used in the help section were generated by Jan Lisec from screen shots of the eCerto app.