2018-10-03 13:18:00 root@micha:/var/log# dietpi-software list | grep remot3.it
id 68 | =0 | remot3.it: (weaved) access your device over the internet | | https://dietpi.com/forum/t/dietpi-survey-information/32/1
Category 10 (Remote Access), software ID 68.
You can also install it via dietpi-software install 68, and at best reboot manually afterwards .
Note it is only available on ARMv6+7, not ARMv8 or x86, if this might be the reason?