Can I use my Roblox username on both my Xbox and my Ipad?

Hi, I don’t know if I’m doing this right. Can you explain what you mean when you said Xbox gamertag credentials. Like my password to login into Roblox would be my Microsoft account password as I remember both that and the username to it but, not the password to my Roblox account. I don’t have a pc so, I tried to login into my Roblox account using my phone and input into the username prompt: my Xbox gamertag username and my Microsoft password as my Roblox password and it didn’t work. During this I had not unlink my Roblox account from my Xbox account. Also when you stated to go to link social accounts in the Xbox account settings I didn’t see anything related to Roblox at all. I don’t know what to do. I’m sorry that I may not understand what you’re saying and I appreciate your help in this situation

hi my roblox username is G0at80y I forgot my password

I did and uninstalled Roblox and reninstalled again and signed in my Roblox username and still nothing

Would it still work if it was on Laptop or does it have to be strictly be Xbox?

Im curious before buying it because at this point of time refunds are hard to do and i would not like to waste my money if it cant connect to the ipad pro 2018

note:the ipad pro and the xbox elite series 2 both use a usbc cable so can you connect them both using a wire?

This occurs on my iPad, my computer, and both my xbox 360s. I have a female avatar.