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Hi @Jurgita Avch
Could you please provide your macOS version?
When you open Excel and the pop-up ask you to sign in to activate, please sign in with your account that has license 2019 to it. If it shows any error, please provide it.
In case it did not work, please fully uninstall previous office and try download Office 2019 for Mac via here. Scroll to bottom and choose your Office version.
If none of the above works, please provide your mac OS version and from there, I will be able to find a compatible version with your Mac.
Plese try and let me know how it goes. I look forward for your reply.
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