I will fix broken n8n workflows and shopify mailerlite data sync


About this gig
Is your n8n workflow crashing? Are Shopify customers failing to sync into MailerLite, missing tags, or dropping off during checkout?
I specialize in diagnosing and fixing broken n8n workflows, webhook failures, and Shopify-MailerLite integration errors so your business stays running smoothly.
Common Problems I Fix:
- Failed n8n nodes, JSON formatting errors & API rate limits
- Shopify customer data, orders & tags not syncing to MailerLite
- Broken webhooks & OAuth / API authentication failures
- Duplicate subscriber profiles or missing custom fields
- Abandoned checkout workflows stopped or failing mid-sequence
- Incorrect logic filters, branching errors & data transformation issues
What You Get:
- Deep diagnostic of your existing n8n setup
- Fast repair without unnecessary workflow rebuilds
- Real-time data sync testing & verification
Don't lose leads or customers due to broken automations.
Contact me with your workflow JSON or error screenshot before ordering!
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Get to know Nicholas Scott
Shopify B2B Expert Native Wholesale and Enterprise Store Developer
- FromUnited States
- Member sinceJun 2026
Languages
English, Spanish, French, German, Italian
My Portfolio
FAQ
Can you fix my n8n workflow without rebuilding it from scratch?
Yes. I always start by inspecting your existing JSON workflow and execution logs to pinpoint the exact failure point (API, webhook, syntax, or credential error) so we can repair it quickly without breaking existing logic.
Why are my Shopify customers not syncing to MailerLite?
This usually stems from expired Shopify API access tokens, mismatched custom profile fields, changed webhook payload structures, or broken n8n HTTP Request nodes. I will trace the execution path and re-align the data mapping.
Do you support self-hosted n8n instances as well as n8n Cloud?
Yes! Whether you host n8n on your own server (Docker/VPS) or use n8n Cloud, I can access, troubleshoot, and fix execution errors in your environment.
What details do I need to provide before you begin?
Please share a brief description of what broke, a screenshot of the error execution log in n8n, and your workflow export file (.json) or temporary system access.
Can you test the integration with live test data before handing it over?
Absolutely. I will run test executions (e.g., creating a test Shopify customer or checkout) to verify that data flows correctly into MailerLite before completing your order.