Clear Cache and Diagnostics

Rule of thumb: If, after an update or a configuration change in
If something isn't right with Amparex or a plugin change, First, the cache
empty – In many cases, that's already the solution.

What the Cache Is For

WP2Amparex does not ask Amparex for store locations every time you click,
Categories, employees, or templates. Instead, these lists are
temporarily cached (via the WordPress Transients API),
to ensure that your booking page remains fast and that the Amparex API isn't unnecessarily
is charged.

This works smoothly in 99 % of cases. Following changes at Amparex
or after plugin updates, however, it's possible that the cached
This information is out of date.

Clearing the Cache – Here's How

  1. WordPress Admin → WP2Amparex → Support / Debug
  2. Click the button Clear the WP2Amparex cache click
  3. A green message saying „WP2Amparex cache has been cleared" appears
  4. Front-end in one Incognito Window Reload so that the
    The browser cache is bypassed

The Cache button has been available since version 2.0.0 Part of the plugin.
In the Support tab, you'll also see the Cache Status:

  • when the WP2Amparex cache was last cleared,
  • how many WP2Amparex transient entries are currently stored,
  • whether WordPress uses an external object cache. With an external
    In the object cache, the transient counter is not meaningful; in this
    In that case, also clear the website's object cache.

When should you clear the cache?

Whenever you've made a change in Amparex that affects the
How the booking form works:

  • New or changed Branches, address information, branch email addresses
  • New or changed Appointment Categories
  • New or changed Employees or their online visibility
  • New or changed Appointment Templates or Local Resources
  • Amended Hours of Operation or Absence/Vacation Blocks
  • Amended API credentials in the WP2Amparex settings

Also, after every WP2Amparex plugin update, if the internal update
Contains changes to slot logic or the cache scheme (see changelog).

Check for plugin updates again

The normal Clear the WP2Amparex cacheThe -button applies to Amparex data such as
Branches, categories, employees, templates, and slots. He asks not
specifically reconfigured the plugin update channel.

Since version 2.5.1 Is there a separate button for that?

  1. WordPress Admin → WP2Amparex → License & Updates
  2. On Check for plugin updates now click
  3. WP2Amparex clears only its own update cache and the WordPress plugin—
    Update Transient
  4. WordPress immediately checks EDD / isla-stud.io again for available versions

This is especially helpful right after a new release or when
A customer site may not see an update right away.

This button does not change:

  • License key or license status;
  • Amparex connection data;
  • Date, store, category, or slot caches.

Diagnostic Tools

Built-in Debug Window

Under WP2Amparex → Settings can be found in one part of the
Debug Mode Activate. You will then see on the booking page
(and/or in the admin panel) Additional notes:

  • Overview of all branches and employees visible in Amparex
  • Online/Offline Status by Resource
  • Freebusy Tester, which you can use to select a specific employee or
    Room ID can be used to check directly whether, for a selected time slot,
    Slots are delivered as „free"

Please turn off debug mode again for live production –
It is intended as a diagnostic mode, not for end users.

Browser Console (for tech-savvy users)

If the wizard gets stuck:

  1. F12 key / Right-click → Examine → Tab Console
  2. Copy the red error (typical examples: wp2a_get_* AJAX call
    fails, JSON parsing error, insufficient permissions)
  3. "Additionally" tab Network: the calls to admin-ajax.php show the
    the exact status code (200, 403, 500) and the response

This information is the quickest way to reach support or the
Support.

When flushing the cache isn't enough

Try the following, one by one:

  1. Clear the WordPress Object Cache (if a caching plugin is installed,
    (e.g., WP Rocket, W3 Total Cache, LiteSpeed Cache, FastCGI Cache).
  2. Clear the browser cache or directly in the Incognito Window test.
  3. Check License Status under WP2Amparex → License & Updates – one
    An expired key prevents updates; no behavior in the
    Reservation.
  4. If you encounter update issues in the same tab Check for plugin updates now
    Click.
  5. API credentials Save again in the settings – one
    An accidental space at the beginning or end is a common cause
    for „Connection failed.".
  6. Check Client Configuration: are the human resources
    Has Amparex been enabled for online appointment booking? Are the
    Local resources with Location_…Are the -tags linked correctly?

If the error persists after following these steps, please write to
the Support – with WordPress version,
PHP version, WP2Amparex version, and (if possible) a screenshot.