Forge points

[Twitcher]

I have 4 or5 buildings I can not acquire forge points as well a some valuable resources. At what amount of forge points do I need to spend in order to collect these locked buildings. In order to collect what is my max points that I need.

 

[Pericles the Lion]

You need to get your FP bar under 100 to be able to collect from buildings that have a FP reward.

 

[Sharmon the Impaler]

You can "cheat" this limit a bit by quickly swiping a bunch in a row when collecting. I have gotten it up to 302 FP on the bar this way.