Network fails after implementing firewall

Information:

• Yellow = VLAN50
• Brown = VLAN 30
• Pink = VLAN 20
• R1 has NAT configured and has a connection to the internet via f0/2
• R2's interface f0/1 has subinterfaces for each vlan
• H1 is a host we connected to f0/0 instead of R2 to check if this host could reach the internet, it couldn't.

So for school we have to set up this network . We had the entire network working with all hosts being able to access the internet without the firewall inserted. But then we inserted the firewall(PFSense) into our network and nothing worked. The firewall allows everything right now in both directions for troubleshoot reasons. What can we do?:

• R1 can ping to F.f0/1 and to F.f0/0

• F can ping to R2 's f0/0 but not a single subinterface

• H1 could ping to F 's f0/1 but not to R1's f0/1

• R2 can ping F's f0/0 and f0/1 but not R1's f0/1

• All possible ACL's etc. are configured to allow everything right now

• IP adressing is correct (we are sure of this)

• every router has a default route to the next interface that goes outside and routes to the inside network on the next inside interface

• When we check our firewall traffic is passing through it every second

• For some reason our firewall keeps pinging the next device that's connected on f0/0, we do not know why but do not think this is relevant to the problem.

Any ideas what we may have overlooked? We think the problem must be related to R1 or our Firewall somehow.

If there is anything I did not explain clearly or some information you want to know, ask away, I'll probably be able to give it to you, and if not, next monday we're able to test again so I'll have the info then.