Please create a choice "Unsupported app" among import choices in Proton Authenticator, which opens appropriate FAQ section at Proton Authenticator support page in your web, where could be described, how manually copy these fields to transfer entries manually. This will save lot of time and hassle, as many programs require lot of unnecessary provements, configuration - bureaucracy to get 2FA work again. E.g. I could manually copy from FreeOTP+ into Proton Authenticator without reconfiguring 2FA. Unfortunately I discovered it too late and already destroyed some app 2FA and e.g. Facebook did not allow add 2FA back from device rarely used, e.g. computer. Similar hassle is experienced also with other accounts. This all takes huge time, which could be avoided, if just people could know, that there is no need to re-add 2FA again, but just copy manually fields from unsupported app into Proton Authenticator. Manually, until Proton Authenticator could support automated import - https://protonmail.uservoice.com/forums/953584-proton-pass-authenticator/suggestions/51249511-manual-transfer-from-unsupported-app-into-proton-a