Apple ID doesn't work with my iPad

I Have been using my iPad for 5 years till now ( iPad 2 ) . Recently I can't log into my itunes account which is really annoying me . I usually just use my iPad to play games and have fun .

The problem starting when I wanted to download a game . As usual I hit the download button and asked my Apple ID . After I entered it , it started to circle around . After 5 seconds the circle stopped and the download button was back again ( the " Get " ) . I saw a couple of solutions in the Internet and signed out ( no one had the solution ) . Now i can't even sign in !!!!!

Everytime i try to sign in , it doesn't work . General > ITunes and you type in your email address and password . After u hit the sign in button , it dimmed ( turns grey ) and then after 30 seconds the sign in button gets enabled again ( turns blue ) . Hit the button again and the same thing happens .

I have been using my Apple ID for years and even a month ago I could download stuff .

I Have tried restarting and resetting my iPad . Even tried a new Apple ID and it didnt work .

MY Apple ID works perfectly fine for other apple products ( tried it on a iphone ) .

Need help ASAP ........ Can't download anything at all 😟