I transferred the coins on the web wallet but they did not exchange, why?
Because the OTX CEO took the brilliant decision to change token and made a swap again and does not want to negotiate with hitbtc to make the necessary modifications for the new token.
Soon that token without exchange will be worth $ 0 and delisted from Coinmarketcap. They talk about Lesfex, their own exchange that does not work. Also, the CEO made the decision to increase the number of tokens to 11,000,000, making all the people who have OTX lose money.
If you have the opportunity, run away from that project.