Any Company Secretarial experts here - advice needed please

Can someone advise please?

A company has three shareholders who each have one equal rights ordinary share.

Two of the shareholders are also directors.

The company is a small company, and is no longer trading, but there are dividend payments in the accounting period, and a corporation tax return is required. There are assets in the company.

None of the shareholders are connected as far as I'm aware.

One of the shareholders is not replying to correspondence or communicating at all, and in the last communication was not prepared to agree the accounts.

The accounts are now overdue at Companies House and penalties are accruing.

What is the suggested way forward please?

Would I be right in thinking that the other director can issue notice to the other two shareholders of an Annual General Meeting to be held in at least fourteen days time, whith the agenda to adopt the accounts?

Can one of the directors do this without the agreement of the other director?

Is there an alternative or better option?

Thanks for any advice.