He's right, ya know. (noob warning)
im having the same issue of not being able to activate the portal... and yes i put water on the bottom of the frame, it just leaks out as if i didnt even have the mod installed, and yes, i also checked.. it is installed i have all the items available to me via creative/too many items. i just cant access the aether itself.
do you have the mod itself, and if you do, did you biuld it like this?: key o=glowstone, U= water bucket
oooo
o o
o U o
oooo
i cant activate the portal either, its like i dont even have the mod. why is this?
this is how i got to the aether, since the portal wont light install the not enough items mod. Once youve done this while you have the aether mod installed search "portal" in the item search bar with the (NEI) mod and you will see it has the heaven portal as a item number you then type /give (name) #-the item number. Once completed place down and you will be teleported to the aether and you will have a portal. YOUR WELCOME lol
Send a photo for us to assess the situation.
Also ensure that Forge is operating correctly and make sure there are no block obstructions.