I have two questions regarding getting 1000-1500 United Miles.
I have Marriott Gold status.

1. In early Feb 2019, I stayed at a Marriott hotel in Vancouver which is linked to my SFO-YVR flight reservation. I was able to see my hotel reservation from the RewardsPlus website. So I could confirm that my reservations were fully linked. However, it has been more than 8 weeks now, I'm still not getting the 1500 miles (1000 + 500 for being Marriott gold). I called both United and Marriott customer service and they seemed to not want to take responsibility. United wanted me to call Marriott, and vice versa. What should I do?
2. I have an upcoming trip to New York on a SFO-EWR flight reservation. This time, I booked a W hotel using the link from RewardsPlus. Unlike last time, I'm not even seeing the linked hotel reservation from RewardsPlus page. So I'm worried that I won't get the 1500 miles again this time.

I'm really sad that this does not work for me. I love both brands but this is just a terrible experience.