Connect the app with your Holded API key.
In Holded, go to Settings → Developers → API keys and copy your key. Create it from an administrator account, so it can work with sales documents and contacts.
In the app, open Settings, paste the API key and click Save.
✅ Success message? You're good to go!
❌ Error message? Check these:
Make sure you pasted the whole key, with no extra spaces.
Make sure the key comes from an administrator account in Holded.
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