I participated in ICO in 2017. I have my Tezos address, mnemonic phrase and etc... I activated my ICO wallet on kukai.app. But the balance is 0. Any ideas how I can access my funds?
Confirm you entered your password correctly. The mnemonic + password, together, generate a unique key. If you entered password incorrectly, you will still get an address, but it may be the wrong one, showing you a 0 balance.
Look at the PDF you received and verify the public tz1 address is the same.
You can join our support chat at this address: https://riot.im/app/#/room/#kukai:matrix.org