Regarding the duration for the electronic tourist visa for the Yoga Teachers’ Training Course in India.
The 30 day visa is not long enough. Please apply for the 1 year visa. The 1 year visa is multiple entry and allows for a maximum stay of 90 days per visit.
Please apply only on this website:
https://indianvisaonline.gov.in/evisa/tvoa.html
Other websites are fraudulent tricks who take the payment but do not provide a visa.