Support could've been lying but I read a conversation that said only the creator of the account can manage their page at SextPanther. Not saying it's impossible for agencies to worm their way in but it's definitely more restrictive and more challenging for them.
1. SextPanther/Mynx is only for North America, so Sanjay in India can't access the account from his basement if SextPanther is strict about IP address location and the city/state/province models have listed on their page.
2. If a model has their phone and video calls turned on it would be more complicated to co-ordinate them simultaneously when texting in real time. I've also seen models log off when streaming vs OnlyFans where their green active online light status is still on when they're camming on another platform and the agency is OOTL or think fans chatting are too dumb to notice what the girl is really doing elsewhere. Girls also can't send a text on SextPanther if busy on an active call session.
The only way I see it easier for an agency to get involved at SextPanther is if the model gives away a personal phone number required to use their account which seems like a bad idea if the agency relationship sours but never ever have their calls turned on otherwise the fan would know they're not talking to the real girl and the account can get deactivated due to violating the terms of service. Models have up to 24 hours to reply back to ensure the platform's guaranteed reply promise otherwise the fan can freely refund the credits back to their wallet without consequence. Mass DMs unlike OnlyFans also don't count as a guaranteed reply so an agency would have to use more of their time replying individually to each user. We know the agencies are all about max profit and minimal effort so SextPanther is less appealing to them.
Girls can respond to a few DMs themselves. If they want to sell PPV can send a mass DM or post it on their feed. No need to use an agency for that. It would be wasteful to give away a cut of earnings but some probably still would if they have zero interest in lifting a finger. Girls I know who use agencies on OnlyFans are very inactive on SextPanther or don't seem to do very well there. Don't think it's a coincidence. On OnlyFans many girls will brag about being a top 1% or 0.01% creator but all we have is their word. On SextPanther the monthly model rankings and daily trending models are public for anyone to see.
While OnlyFans and other platforms have gone all in on endorsing agencies SextPanther seems to be taking the opposite approach and offers an arguably better experience for fans and is more casual for creators to use themselves. If they don't want to worry about not responding to texts within 24 hours they can turn off their status to unavailable until they're caught up. Unless a fan loads his wallet only for chatting chances are he will only send a message once or twice a day because each text costs credits, so it is more realistic for a creator to reply back to multiple fans and multi-task if there are less fans using SextPanther to communicate.