There are many rumors that Bitinka workers have been leaking inside information on telegram groups about the exchange,
seems to be some big inside problem, many of their workforce have left and now they are facing insolvency,
https://www.criptonoticias.com/analisis-investigacion/exclusiva-comunicado-interno-revela-bitinka-enfrenta-problemas-economicos/
Their website https://www.bitinka.com/ is displaying this message
And is currently on maintenance
There is no official update on their twitter https://twitter.com/bitinka
Bitinka was ranked on the top 20 of coinmarketcap exchange by volume
https://coinmarketcap.com/exchanges/bitinka/
Also Coinmarketcap is issuing a warning
Some of the Bitinka bank accounts got seized by authorities and many reports of lawsuit across south american countries
https://www.cryptoworldjournal.com/uncertainty-among-users-increases-because-of-bitinkas-fall-and-silence/
https://www.criptonoticias.com/gobierno/judicial/juzgado-decreto-embargo-contra-cuentas-bancarias-bitinka-argentina/
If you are an user of Bitinka my advice is to try to withdraw your coins as soon as the exchange is out of maintenance, (if it happens) most probably is an exit scam at this point.