Around 2 years ago my country blocked access to change.org as it contains "prohibited content" (it is widely believed to be an appeal for Germany not to permit Thai king to take up long-term residence there; people believe that the ruler should behave properly and stand with the people in its country)

The appeal itself appears to be reasonable, but Thailand is notorious about the enforcement of lèse-majesté law [1], and anything that could be interpreted, even slightly, to fall under this law often saw a summary judgment, less burden of proof, and harsh punishment. This is the reason the authority cited as a basis to block it. AFAIK, the website fought back; the block lasts only 6 months.

[1] See https://en.wikipedia.org/wiki/Lèse-majesté_in_Thailand for more information.