Are funds stored on clearwallet.co safe or is there a reason to be concerned? When people are openly posting that they are having withdrawal issues these should be addressed immediately.
Nothing is stored on clearwallet.co. Your private keys are always with you browser side (derived from your seed passphrase) and never transmitted anywhere.#
However, you still use the system at your own risk as per the terms on the website which you have to agree to use use the "wallet" (wallet is a bad word since wallets store funds. In cryptocurrencies, wallets are actually keychains).