Don't be so sure. Mathematically in this way, it can take years .. so you have to wait a little ..
I think by design it's rather short term project:
...
I estimate that we are going to be completely independent by the end of February and we will be able to post videos and images of our setups and asic boards. It will be worth the wait.
So probably he/they aimed to wind up by Feb or shortly after.
The recent post of cryptomine and his sudden change of tone can indicate that things are probably not going smooth for them.
You should consider cashing out any "mining" incomes on a regular basis.
They also have a clause in their T&C:
3. Rightful Return and Refund
3.1. You have the legal right to cancel a Service Agreement during the first 14 days if you change your mind or decide for any other reason that you no longer want to receive our Services.
3.2. You can cancel a Contract and receive a refund, according to clauses 4.4. and 4.5. of the Mining Capacity Share Agreement. Refund period is not limited to the first 14 days, although cancellation fees apply to every situation. Read every Agreement carefully.
3.3. Advice about your legal right to cancel the Contract is available from your local Citizens' Advice Bureau or Trading Standards office.
If you've invested in the last 14 days you can ask for the refund and see what happens.
As for highlighted part, there are no 4.4 and 4.5 clauses in T&C and don't see any separate Mining Capacity Share Agreement anywhere. Very amateur copy/paste work.