Can't log in to my heatwallet account

any way to reset my phrase? I know i have the right pin... nothing i try is working, tried contacting Heat Ledger Ltd twice but no response.

You cannot reset your phrase, if you know parts of the phrase still you could try to bruteforce the pass somewhere.
Note that the pin is only fixing your account to the used browser or app, if you enter the passphrase on another location (like another browser), you can use a different pin if you want, so it is the passphrase you will need to remember first and foremost!

If you are using the same browser as before, then the pass is kept somewhere safely until you clear the browser cache, and that is where the pin comes in.

Did you already fund your account? If not, then just go ahead and create a new one. If you did, I do hope that you can still go to the browser/app with which you've made the account and try out whatever pin you can think of to log back in.

Good luck, hoping your are able to retreive the info!