OP nostr:nprofile1qqs8d5jes2cgcefqd93f4nvaeuyw5fdwlwye5cv6arq3wl9ust44x6gppemhxue69uhkummn9ekx7mp0strcrl, to answer your question...It is irregular for Amethyst to not retain Tor/Orbot settings. It's the first I've heard of it and haven't experienced it.

What version of Amethyst are you using? Is it from GitHub or Google Play? How old is your Android?