Can I integration both FSB and ECB with the Debut theme?
Yes, it is feasible.
We have prepared a solution for your theme:
https://hextom-knowledgebase.myshopify.com/blogs/fsb/debut-theme-integration-fsb
https://hextom-knowledgebase.myshopify.com/blogs/ecb/debut-theme-integration-ecb
After you complete both guides, the bars should work correctly on your website.
Please follow the instructions, and let us know if there are questions. :)