Yoroi wallet missing funds

[COSDpool]

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Ada delegated in MELD 6 Pool possible scam?

Hi everyone, Almost 2 weeks ago I delegated my ADA to a pool “MELD ISPO 6”, with costs (99% +340). Since then I have 0 ADA in my account. As well I can see the delegated pool and when I receive the upcoming rewards for the first time, 7th of October. But when I check the pools, I can’t click on “delegate” button on that specific one MELD 6. Should I understand I lost all my ADA, but in exchange I will receive MELD Tokens or I just everything? Thank you.