ussualy advertising network in crypto curency payment only use bitcoin
because if use altcoin advertising network is very difcult can exchange to fiat money, if use bitcoin can use service bitpay , automatic can convert to fiat mone
I think now there is no problem with the altcoins. Just go to exchanger like bittrex and convert to bitcoin. by the way, the biggest problem of ad network is low CTR and high fees network for bitcoin payment. I join a-ads but the payment is very low. Now the withdrawal treshold is 0.002 , When i join years a go the withdraw is 0.0001.
that's right mate maybe that's why altcoin advertising network is almost nowhere to be found, just like you I also do have a-ads account and I find it
not profitable anymore since my site is not that visited much and hosting it is really costly for me.