The journal looks empty or differs between computers

What you see. The journal looks empty after sign-in, an edit disappeared, or settings differ from your other computer.

Why and what to do.

Empty after signing in. Each Tented account has its own journal. Signing in with another account restarts Tented into that account’s journal. Sign in with the account you used before.
A second computer opened setup instead of your journal. Tented Cloud did not answer at launch. If you then add anything, choose Use Tented Cloud’s when asked.
An edit on one computer replaced an edit on another. By design: when two computers change the same item, the later change wins.
Connection settings or panel sizes differ. By design: they belong to each computer.
Nothing syncs, journal on your computers only. If you chose Your computers only, nothing is sent to Tented Cloud (see Choose Tented Cloud or your computers only).