I'm unable to download Roblox on my iPad

on my iPad I cannot download Roblox. I played this morning then in the afternoon I opened it and it said ‘no network please retry later’ something similar because I had no internet but I was connected to wifi. So I tried deleting it and reinstalling and now I cannot install Roblox. I press the button there’s the circle loading icon going for a few seconds then it just goes back to the download button. There is nothing wrong with my wifi either

[Re-Titled by Moderator]

Original Title: I can’t download roblox