I've had a look at your website, and there are a number of things which concern me enough to not want to use your service. Perhaps you can address them.
Cold wallet made simple
A phone is not a cold wallet.
can easily audit (even without reviewing our open-source code)
I can't find a link to your open source code anywhere, and the "audit" link simply links to your wallet generator.
If, within 6 to 12 months (depending on the plan you purchased), you do not renew or cancel your plan, selftrust.me assumes you passed away and automatically emails your heir the cryptogram it holds.
This is not trustless. We have to trust you not to go out of business, or hold our coins ransom whilst demanding our heir pay for the other half of the secret. At the moment we also have to trust your secret generation and transmission process, since there is no link to your source code.
There is also no mention of your pricing model. Why would I pay an ongoing subscription and trust an unknown third party, when I could just split my seed myself and pay a one-off fee to place half of it in my will with a reputable law firm?