It may not be a direct conflict of interest but may have the “appearance of impropriety” to such an extent that, if handled carefully, could allow...

One method is a motion to the court

No the attorney is not required to do either in the first meeting. But, in being hired, the attorney must advise on how fees are structured.

Some attorneys offer unbundled or consulting services. Use the Avvo search tool to find an attorney. https://www.avvo.com/find-a-lawyer

Look for an international business law attorney. Use the Avvo search tool to find an attorney. https://www.avvo.com/find-a-lawyer

There are methods to prevent the disclosure of addresses for safety reasons.

Yes those are normal billings. Receipts are not usually provided with the invoice.

The best way to have your case evaluated is be contacting experienced medical malpractice attorneys in the state where this occurred.

A case is possible. Look for law firms who are pursuing Covid vaccination manufacturers.

Posting online can be bad for your case in many ways. If you will bring a lawsuit discuss with your attorney before doing anything.