Having an issue with my font, need help please.

So I am working on an illustrator file that is only 6 month old. I went to change the phone number but the numbers are turning out different and I dont know what has changed to cause this. I have the two examples in the photo. The 9 and 2. Left 9 is the origional and the right 9 is what happens when I type now. It is the same with the number 2. Left 2 is orgional and right 2 is what shows up now. Also tried the number 6 and it shows up taller then the rest of the numbers. All font settings show up the same. By chance does anyone know what is happening and how to fix?