Roblox bug "connecting to server" endlessly

I've been playing Roblox for a long time and I had never experienced this bug before, let me explain...
When I start Roblox (I play on iPhone 6s) and I go into a game everything goes well, but at one point the game stops and I return to the menu. I go back into the game and it says "connecting to the server" but this goes on infinitely, so I can't play Roblox again (I have an excellent connection) and I try restarting but it doesn't change anything, so that's it, thanks to anyone who can help ????❤️