Yup, I'm also a member of the 404 error club!
I am with you chrisg, I am whitelisted and getting 404 error also.
I got 404 errors. Tried everything. ONLY having the new mail open, clearing cache--over and over the 404 errors.
I was curious about you folks getting 404 errors. I can confirm it happened to me as well. Some type of site issue I would guess.
Still won't work unless you are talking removing every email address from every connected devise. I removed all email addresses from 1 phone, cleared the cache, added the whitelisted account to the 1 phone. Signed in to the 1 whitelisted account, tried the link and still a 404 error. What a colossal waste of time.
Are you saying you cannot use a new sub gmail account, linked to your primary gmail account?
No the project will be over in August 2018. I am the recruiter of this project, tell me what your area is please, I 'll check if I can extend the amount of orders for your city.