Share Center & cloud sync
The 
button on the home screen opens Share Center, where you send macros to other people and back up your own. Both are features.
It has three tabs, Send, Receive and Sync.
Your username
Sharing uses usernames, not email. You pick yours at sign-up (Randomize username suggests one), and it is shown on macros you share and on you write. It cannot be changed later.
Sending a macro
On the Send tab, pick the macro, type the Recipient Username, and choose what they are allowed to do with it:
- Recipient can edit macro. Off, they can run it but not open it up.
- Recipient can share macro. Off, the chain stops with them and they cannot pass it on.
Both are off by default.
Macros that use Http, WebSocket or File cannot be shared. The app tells you which call is blocking it.
Receiving
Incoming macros land on the Receive tab and import in one tap. You can 
report a user who breaks the rules, and 
block one, which stops them sending you anything further. Blocked users are listed on their own screen so you can unblock later.
Cloud sync
The Sync tab backs up your macros to the cloud and restores them on any device you sign in to.
Every macro shows where it stands:
- In sync, both copies match.
- Device edits not backed up, you changed it here and have not pushed it up yet.
- Cloud version newer, another device pushed a change you do not have.
- In cloud only, it exists in the vault but not on this device. Pull brings one down, and Pull all from cloud at the top does the lot.
- Conflict, needs review, covered below.
Delete from cloud removes a macro from the cloud and keeps the copy on this device. The cloud has a storage limit, and the app tells you when you reach it.
Conflicts
A conflict means both copies changed since the last sync, usually because you edited the same macro on two devices.
The dialog shows both versions with their update times. Pick Use Cloud or Keep Device; the other version is replaced.
To avoid conflicts, let one device finish syncing before you edit on another.