[HELP] Achievements don't show up!

Hello everyone, I just started HTB boxes these days and I did 3 of 'em those from Starting Point. When I get the link to share it, it appears as “Invalid Achievement”. This is an example: https://www.hackthebox.eu/achievement/machine/707174/289 I don’t know if it’s meant to do so. Thank you in advance.

Hey dunCan213,

I have recently pwned the first two starting point machines but didn’t shared it on social media.
Can you please tell how to share the achievements afterwards?