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

Art. 39, Loi organique n° 29-11relative aux partis politiques,                      

http://www.sgg.gov.ma/Portals/0/lois/Loi_29-11_Fr.pdf?ver=udBqyqqMSUHXgxtDpGhmCw%3d%3d            

Loi No. 9-97 formant code électoral,  https://www.chambredesrepresentants.ma/sites/default/files/loi9.97.pdf

The relevant laws do not specify any  provision for candidates. However, Article 39 of party regulation may apply.