Redirect uri in Azure B2C with query string. Error detail: URL may not contain a query string

I’m trying to use Azure B2C OAuth for Alexa account linking with implicit flow.Below is the redirect url from Alexa

https://alexa.amazon.co.jp/spa/skill/account-linking-status.html?vendorId=XXXXXXXXXX

But adding this gives below error in Azure B2C app.

Failed to update xxx-xxxxxxapp application. Error detail: URL may not contain a query string

I tried below link for solving this but its not working
https://blogs.aaddevsup.xyz/2018/04/query-string-is-not-allowed-in-redirect_uri-for-azure-ad/

I also tried auth code grant flow with SPA in B2C. That is also not working with Alexa as it has PKCE – https://github.com/MicrosoftDocs/azure-docs/issues/64073

Anyone succeeded in creating this?