The hour that disappears is almost always the hour when nobody wanted to switch tabs. The Chrome extension solves that: it puts the timer in the browser's side panel, next to the task you're doing.
What it does — and what it doesn't
The extension starts and stops the timer, lets you log time already worked and shows your day. That's all, on purpose.
Weekly timesheet, submitting for approval, reports, rates and profitability stay in the app. An extension that takes on the system's responsibilities becomes a second system, with half the screen and twice the problems.
Because of that same design, it shows only your hours, even if you're the account owner — not least because decisions about other people's work aren't made there.
Connecting
Go to Settings › Chrome extension and click Generate connection code. If you like, give the device a nickname — "Home computer", "Office laptop". That's what lets you recognise each access later, when there's more than one.
The code appears only once. Copy it right away; if you lose it, just generate another. Then:
Open the WiseData Time extension in your browser.
Paste the code into the connection field.
Done — the extension's timer now runs on your account.
Several devices
You can connect as many devices as you use. Connecting the extension at home does not disconnect the one at work: each is its own access, listed under Connected accesses with its nickname and last use date.
It's the same account and the same timer: if you started it from the office extension and stop it from the app at home, it stops. And since there's only one timer per person, starting a new one anywhere closes the previous.
Disconnecting
Under Connected accesses, use Revoke. That device's extension is disconnected immediately — including if a timer is running on it. Hours already tracked are not affected.
Revoke whenever you change computers, lend the machine or don't recognise an access on the list. To use it again, just generate a new code.
One important difference from the app
The extension needs a connection to work. The queue that stores hours when the internet drops belongs to the app — if you often work where there's no signal, the app (which can be installed as an application) is the right place to track.
Where to go next
Timer and manual entry — the app's timer.
When the internet drops — where offline hours are stored.
The weekly timesheet — the closing, which isn't done in the extension.
In short: generate a code under Settings › Chrome extension, paste it into the extension and the timer runs on your account; several devices coexist, each with its own nickname; revoking disconnects immediately without affecting tracked hours; and the extension does timer and entry — everything else is in the app.