A professor has offered me a summer research project at his lab. The last we had talked was on a Zoom call during which I was offered the position. He had then asked me to send my academic records after which he would give the other documents like Offer Letter, Visa Forms, etc. I have mailed him my records and have asked to discuss the project dates. He is not responding to my emails. It's been almost 20 days. I have also sent follow-ups, the last one being sent this Monday. He still hasn't responded.
Has he cancelled my project? If so, why hasn't he informed? What should I do next? Should I send another follow up this Monday?