No, it is not you. Their chat api expects headers that they do not include in cors allowed headers, we had to write a proxy just for this. Salesforce as a com

No, it is not you. Their chat api expects headers that they do not include in cors allowed headers, we had to write a proxy just for this. Salesforce as a company is a terrible experience. Had many incidents because of their bad practices or lack of knowledge or incompetency.