Below, I will provide all of the information that I have (beyond the fact that Noble Bank is currently insolvent) that has led me to believe that Bitfinex is insolvent. I will show weeks and weeks of customers attesting to the fact that they have not received any of their fiat withdrawals from Bitfinex.

In addition, it appears that there is not a single instance in which a customer ticket has actually been resolved by the team and in many cases, the tickets have gone completely unanswered.

The vast majority of Reddit threads created by user threads in the Bitfinex subreddit from customers that report not receiving their funds, have been deleted by the Bitfinex subreddit moderators.

On top of that, customers have noted:

Connection issues in actually accessing the exchange.
Serious problems with actually depositing and withdrawing cryptocurrency to and from the exchange, respectively.
Funding ‘autorenew’ shifted to ‘on’ for some accounts, resulting in customers being unable to stop an infinite loop of their cryptocurency being loaned out on the platform.
An absolute failure by customer service/Bitfinex internal support staff to answer their concerns, give them a timeline, or even acknowledge that they are aware of the issue itself.
At this point, it is simply unsafe for anyone to use the Bitfinex exchange or Tether since Tether is directly attached to Bitfinex.

... The whole article here:
https://medium.com/@proofofresearch/warning-bitfinex-is-no-longer-solvent-remove-your-money-now-in-depth-report-50b11325ea26