Troubleshooting and FAQ

Creation date: 10/23/2026 4:36 PM    Updated: 10/23/2026 4:36 PM

Quick answers to the problems installers hit most often in the Web Switch Builder.

Targets and commands

ProblemLikely causeFix
Use my targets is greyed outNot signed in, or no targets addedClick My targets, sign in and add targets for the site
The target list says No matching targetsThe widget needs a different target type (for example a Data slider needs a system variable)Add a target of that type in My targets
A site's groups or devices are missingData out of dateMy targets > Refresh; check the site in the zencontrol app
A controller's address changedStored IPs are staleMy targets > Re-sync IPs
A rate-limit banner appearsVery large site loadingWait; the builder retries automatically
I can't find the manual IP / address fieldsThey are hidden in current versionsUse My targets instead

No matching targets: the widget needs a target type that is not yet in My targets

Layout

ProblemFix
A widget won't fit where I drop itFree up cells, reduce its span, or use a finer grid; new widgets shrink automatically to fit free space
Text is cut off or wrapsReduce the font size in Edit Layout, widen the widget, or turn on Force uniform text size
A label disappears when the button is offIts Text colour matches the Background colour; pick a contrasting Text colour
A button label is unreadable when pressedText switches to the theme's background colour on the active state; choose an On or Active colour that contrasts
The menu bar covers widgetsReduce Menu height or the grid rows
Navigation buttons and pop-ups do nothingThey only work in Preview
Animation settings won't changePage and pop-up animations are not currently supported

Files

ProblemFix
Save does nothing in Safari or FirefoxUpdate to v1.123.0 or later; these browsers save as a download
I closed the tab without savingReopen the builder in the same browser and accept the draft-recovery banner
A large project won't openFiles up to 80 MB can be opened; reduce embedded image sizes
My theme / settings vanishedBrowser data was cleared or consent declined; check Privacy settings

FAQ

Do I need a zencontrol account? Only for My targets. You can design, theme and preview a layout without signing in.

Does it work offline? No. It runs in the browser and My targets reads from the zencontrol cloud.

Can I design on a phone or tablet? Yes. Small screens get a simplified layout with View, Place, Edit and Page tabs at the bottom and touch dragging. A desktop browser is still the most comfortable for large projects.

Which widgets need a target? Every button, slider and colour or data widget except the Popup button, Navigation button, Label and Image.

How many scenes can a Command button recall? Scene 0 to Scene 13 are listed in the Scene switch type.

Where is the version and changelog? Bottom of the widget toolbox: the version number and What's new.

Is the built-in Help up to date? Parts of it describe older behaviour (for example manual IP fields and popup sub-buttons). These articles reflect v1.123.0.