South Africa's Inclusive and Affirming Ministries criticized resolution
Tanele Maseko taken into custody on March 28 at border crossing
Supreme Court previously ruled in favor of Eswatini Sexual and Gender Minorities
Kenya and Eswatini groups have won legal victories this year
Registrar of Companies in 2019 denied organization's request
Advocacy group hopes to legally register
April 29 ruling upheld decision not to allow group to register
