Couple questions about Tamagotchi Friends

[KuroiNeko-Chan]

I caved and bought two Tamagotchi Friends. I have the American version. I have a boy and a girl, they're both four, have max friendship and they won't mate. I heard that they needed to be six to mate, but other people say they can mate at four. I'm a little annoyed that the I can only bump five times a day and I'm trying to figure out what exactly determines when to reset the limit. Passing midnight and waking up don't seem to be it. I heard that there will be five jewelry pieces that you can only get from a Dekatama. Does that mean that I can't unlock all the games unless I bump with a Dekatama? I don't live near any Toys R Us stores...

Sorry if this has already been answered. I did several searches and either couldn't find the answer or found conflicting answers.

 

[Eternal Mametchi Fan]

They can't marry until the Age of 6. The BFF hearts on both characters needs to be full.

The bump limit should reset after your Tamagotchi goes to sleep and wakes up but changing the time can make it glitch and take an extra day to reset the bump limit.

One of the games is obtained by collecting 30 jewellery pieces and another is obtained by getting half the BFF heart full.

 

[KuroiNeko-Chan]

I thought you needed to get all sixty pieces to unlock the last game? Also, the whole heart? I foresee sending a lot of mail in my future...

EDIT: I was able to mate my tamas today when they should have been five. I changed the time so that I could get the Date Place yesterday and the age counter was seven today. They mated with only half the BFF heart full. I also unlocked a game when I filled half the BFF heart. Can't wait to get thirty jewelry pieces to see what the last game is!