Hi, I am developing a strategy and when I want to attach some instruments, I have noticed that the following 24 pairs get removed once my strategy starts. Is that because they are not available, or is it because I am using a demo account or are there some other explanation, thanks!

Code to verify:
In Main:

 Set<Instrument> instruments = new HashSet<>();
        instruments.add(Instrument.EURTRY);
        instruments.add(Instrument.EURUSD);
        client.setSubscribedInstruments(instruments);

In Strategy.onStart:

       instruments = context.getSubscribedInstruments(); <= Now only one entry, EURUSD.

Pairs that are unregisterable:
btcusd
chfpln
ethusd
eurbrl
eurczk
eurhuf
eurmxn
eurpln
eurrub
eurthb
eurtry
eurzar
hufjpy
mxnjpy
nzdsgd
usdbrl
usdczk
usdhuf
usdils
usdron
usdrub
usdpln
usdthb
usdtry

You have to accept the "Exotic Instruments Disclaimer" and "Cryptocurrencies Disclaimer" in the user interface of the platform. You can find them in "Preferences/Disclaimers" or they will pop-up when you try to subscribe to them.