One Ring Account on two different Amazon Accounts

Hi! I have a question about the Doorbell Pro2: We have several Amazon echoes in the household with a total of 2 different Amazon accounts. If I activate the Ring Skill in the Alexa app of one account and log in with my Ring Account, the corresponding echoes that are logged in to this Amazon account also giving a notification if someone rings. But if I activate the skill on the other Amazon account and log in with the same Ring account, only these will ring and the former will no longer ring. Is there a solution? I've already tried it with a shared account. Unfortunately, this does not work ( "Shared Users and Alexa" in the Ring Help) Thank you for your help and best regards from Lower Saxony / Germany Thomas