ok sorry for late response, I wasn't using metamask at all I was using MEW by changing it at kovan simply.
I will try metamask later but I will need to transfer my DAY tokens from minting adress to a metamask adress ? :/
thanks for help
No problem for responding 'late', this isn't a chat but a bulletin board fortunately
To get straight to your question: no, don't move any day tokens from your timemint, ever! unless you're selling them.
You need Kovan test DAY tokens because the chronologic dapp is still in the testing phase on the Kovan test net, and you can receive them by requesting from the faucet at
https://app.chronologic.network/faucet . Once the dapp goes into actual 'production phase', you will need to prove ownership of the ethereum address where you keep your real DAY tokens, but not for now! you want to first get accustomed to the dapp, how it functions, experience being a timenode and perhaps schedule some transactions yourself.
Metamask is a browser extension with which you can access existing ethereum wallets/accounts without the need to expose your private key to dapps/exchanges/websites. The accounts you already own and set up once through MEW or mycrypto you can easily import in MetaMask. Do keep the MetaMask password and seed phrase private and in a safe place of course.
While being connected to the Kovan test network you can sign a message with the help of MEW (
https://www.myetherwallet.com/signmsg.html ) or mycrypto (
https://www.mycrypto.com/signmsg.html ) , that shouldn't matter, but the preferred way of doing this is by accessing the wallet (where your Kovan test DAY resides that you requested from the faucet!) through MetaMask. You will get a MetaMask popup to sign the message, the signature you then submit in the chronologic dapp.
If you still have trouble, join the unofficial discord channel and ask for help at
https://discord.gg/2tStfUP or the official telegram channel at
https://t.me/chronologicnetwork .