What you did was recognized as not a malicious attempt at causing harm to GirlChat. If it had been you'd have not been allowed to post this message that I am now replying to.
I did reach out to the developers of the software in use here at GC about this and immediate action was taken. Here is their response:
Please forward this message to GC: "Major upgrade is coming in Jan 2021. In the meantime, the use style attribute is banned, and posting links is turned off for security reasons until the upgrade is completed."
A major update to the underlying software has been in the works for several months now. I have hesitated to say much about it as there have been delay after delay, so I'd rather say nothing than constantly not meeting some random deadline.
The new software was rolled out on the French BL board La Garçonnière - https://lagarcon.net a few days ago and on the German BL board Jungsforum - https://www.jungsforum.net/ just today. The plan as I understand it now (from the message that I posted above) is to upgrade the software here after the holidays.