2. Is there a ban on donations from foreign interests to candidates?

Election Code of the Republic of Azerbaijan, 2003 (as amended 2019). https://www.msk.gov.az/uploads/qanunvericilik/Election-code_2020.pdf

ECA prohibits foreign countries and foreign legal entities; foreign citizens; stateless persons;   international organizations and international social movements from rendering voluntary donations and assistance in kind or services to election funds of candidates and registered candidates (Art. 90.2.1, 90.2.2, 90.2.3 and 90.2.6).