Difficulty not Changing

[tarashyman]

So me and my friend are playing on a server he hosts on minehut, and we set the difficulty through the settings on his dashboard to hard, although, the game was very easy, checking the in game difficulty it said easy. Generally, I thought that this was just bugged, although, I tried /difficulty hard, and sure enough, that got it to work, however, only in the overworld. In any other instance, such as the end or the nether, the game difficulty is back on easy, and that doesn't change no matter how many times we do /difficulty hard or we change it in the settings on the website dashboard. This is very disappointing since the entire time we thought we were in hard mode, however, it was underwhelming and sad. I ask for a fix, such that when difficulty is set to something in the setting it works, or, when the command is used it actually works, or if any other ideas or ways I could fix this, it is welcome