Connecting my Google account data

Hello,

I received an email telling me that their appears to be a problem with the connection of my Google Analytics data to the Rank Math plugin on my WordPress site.
I can see data for the site if I look at it through my Google Analytics account, so data is being generated, but it doesn’t appear to be getting sent to the plugin.
I have examined the header section of my site and the Google tag appears there, also the Google site verification code appears as well.

Looking at the Rank Math log, I can see numerous repeating warnings:

[23-Mar-2022 10:59:54 UTC] PHP Warning: Cannot modify header information - headers already sent in /home/ubmfhrtj/public_html/valuecbd.co.uk/wp-content/plugins/uncode-privacy/includes/class-uncode-toolkit-privacy-public.php on line 342

When I go to the Rank Math/General Settings/Analytics I see that I have a green light on the search Console section, but not on the Analytics section. I have entered my data in the dropdown boxes as follows:
Account: “Value CBD”
Property: “Value CBD UK”
View: “All Website Data”

However, when I hit “save”, the boxes are blank, as if the data will not stick.
What am I doing wrong?

Please advise,
Chris Rose