President Yoweri Museveni made to the players last year after their participation in the 2019 Afcon.
Lewa conservancy organises virtual marathon in place of annual marathon.
The Cup of Nations was set to be played in January and February 2021.
The US is the largest single contributor to WADA.
Fecafoot says it was impossible to complete the 2019/20 season due to Covid-19.