What do you think I should do now?
If the token or coin has no price then nothing can be done. Because the token is valuable if there is a price. Exchange is the most important thing, if the token you have does not have an exchange, it is useless. We can only wait until the developer signs up for another exchange.
Unfortunately thats true, a coin/token without exchange will become worthless, it has no worth if its not tradable.
Thats why I dont buy a coin that is listed in just one exchange because it has a high risk to be delisted if there's no volume.
If the dev wont abondone the coin then it will progress and you can only wait for it to be listed in another exchange.