FLY is FUN

I have two android devices, a galaxy tablet and a celular S2, since you change license trial will expire in 30 days.
In general I use the tablet, buy sometimes due battery drain I use celular as backup.
Can I buy one license for both devices?
Regards.

Yes

YES means I can buy ONE unlock licence and install it in both devices (tablet and phone)?
Regards.

Yes

This brings up the question of:

I have an "old" Galaxy S2 with FlyisFun I've had for years (currently version 14.4 unlimited), I got a new cell Galaxy S4 which is now my primary cell phone.
Can I install FlyisFun on the new cell using the same license that is on the S2?

Do it using the same Google account.

Hi everyone. You can understand the main thing that buying a license you do not buy it for the gadget. You buy it for your account.

I tried using the old activation #, it didn't work.
Maybe it has something to do with the serial #s being different - or I don't recall paying $19.90 for a license something more like $4-$5.

Are there 2 different kinds of licenses?
The old ~$5 one which is device locked and the ~$20 one which is an "account" license and which can be good on multiple devices??

Did you buy FIF via Google Play or PayPal?

Probably Google Play (or its former moniker) although FlyisFun doesn't show up as bought on google play, just installed.
Actually there's a lot of mistakes on google play, some apps are listed 3 or 4 times, others not at all.