I hope the participants in this discussion from 2018 don't me picking up the thread, as I've had a similar issue after making the mistake of sending OCTb, an ERC-20 token, to Freewallet before it was supported, back in August 2019. I'm still waiting on a solution, after many emails and tweets; so in case anyone else makes the same mistake I've laid out the discussion with Freewallet on my blog

Any suggestions how best to encourage Freewallet to escalate this to a solution in June 2020?