I was trying to make a glitch typography: I've done it once and it worked but now it's not working and I don't know why. I have two words I need to select as a group: I go to Blend > Blend Options > Specified Steps > Ok. The next step would be to choose "Make blend" but IT IS NOT POSIBLE. I can't click the button: here I post a screenshot. Please I need help, I don't know what is going wrongly. (It is in spanish: Fusión = Blend)
What version of Illustrator and what operating system are you using? I tried duplicating your issue and it worked fine. This was true whether I converted the text to outline or kept it as type. Can you go into more detail about how you've created the type you want to blend? If you are using live text have you tried converting to outlines? It should work either way but it's worth trying a different way.