Invalid Signature

[Azure-Orit]

when adding the repo I get an error saying "lomiri: the signature "Ivan Semkin (GPG key for Unity8 Arch repo) ivan@semkin.ru" is not valid"
already tried changing to [unity8]

[vanyasem]

the repo was moved to archive.org, as it is no longer active and was effectively moved to https://gitlab.manjaro.org/manjaro-arm/packages/community/lomiri-dev

[Vodahlyest]

ok, the repo was moved to GitLab, so what shall i do next to make unity8 work on my manjaro system?