I added the Find a Grave reference you posted to the profile. The FAG birthdate does not agree with what was on the profile, but other information agrees.
As Ian Beacall indicates, you will need to sign the honor code to be able to edit profiles. There is now a message on your profile with more information.
Here is another link that might help
https://www.wikitree.com/wiki/Help:How_to_Use_WikiTree
When you are a full member you can adopt Frankʻs profile, as it is orphaned. We encourage you to start with yourself and then your parents and grandparents to build a nice new branch to our tree.