You can check the usage statistics of your server GTM container by client type in the Stape admin account. To do it, log in to the Stape account  → choose a container  → click the “Subscription” tab → scroll down to the "Usage Statistic" section.

Please note, if you are using Multi-Domain power-up, you can also see the statistics by specific domain:

Client types in usage statistics

• Data Client - shows the requests sent from the Google Tag Manager web container to the server container (if you are using Data Tag/Data Client).
• GA4 - all the requests that are associated with Google Analytics 4.
• GTM - shows requests if you running the Google Tag Manager preview.
  When the preview is running, once every 10 seconds (and maybe more often), it will keep on sending those hits to your server container.
• JS Libraries - if you are using a custom domain and Custom Loader, all the scripts as gtm.js and gtag.js etc. are loaded from your custom domain and counted as a hit to your server container.
• Stape - requests to Stape Store if you are using it.
• Other - any request to your server container that does not refer to the Clients described above.