It must be some sort of terms and conditions with the agency, that they cannot openly admit they are with an agency.
Most agencies exploit people in third world countries, so I guess the agencies want to be under the radar.
It probably makes her money in the short term because she will reach a higher following, but it will hurt her in the longer run.
She used to sell sets on other platforms but she got progressively banned from all of them, so I guess she panicked and went with an OF agency to try to compensate.
Her Patreon sets are still ok, in fact I think the quality there is better than before. but her activity on that site is close to 0, other than sending the sets that is