SEO Analysis “an error occurred”

oh, now have a 404 when trying to run the SEO analyser:

Rank Math SEO PRO
DASHBOARD / SEO ANALYSIS
API Error: HTTP 404 error.

Hi, back to the previous error.
Also I’m trying to update the plug-in, free version updated ok, but the pro version update and upload returned this error:
Installing plugin from uploaded file: seo-by-rank-math-pro.zip
Unpacking the package…

The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature

Go to Plugin Installer

hmm, the updated RankMath free crashed the site. Couldn’t yet upload pro. now trying to access the wp-admin again via the WP recovery emailed link. See the WP email below:
G’day!

Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.

In this case, WordPress caught an error with one of your plugins, Rank Math SEO.

First, visit your website (https://naturalremedymassage.com.au/) and check for any visible issues. Next, visit the page where the error was caught (https://naturalremedymassage.com.au/wp-admin/post.php?post=707&action=edit) and check for any visible issues.

Please contact your host for assistance with investigating this issue further.

If your site appears broken and you can’t access your dashboard normally, WordPress now has a special “recovery mode”. This lets you safely login to your dashboard and investigate further.

https://naturalremedymassage.com.au/wp-login.php?action=enter_recovery_mode&rm_token=0uB49bSEudl65Utlf0ZHs7&rm_key=1SW7TsaOoZ83YHybTd8e0S

To keep your site safe, this link will expire in 1 day. Don’t worry about that, though: a new link will be emailed to you if the error occurs again after it expires.

When seeking help with this issue, you may be asked for some of the following information:
WordPress version 5.7.2
Current theme: Retina Blog Pro (version 1.0.7)
Current plugin: Rank Math SEO (version 1.0.68)
PHP version 7.3.24

Error Details
=============
An error of type E_ERROR was caused in line 344 of the file /home/gingko11/public_html/naturalremedymassage.com.au/wp-content/plugins/seo-by-rank-math/rank-math.php. Error message: Uncaught Error: Class ‘RankMath\Rest\Admin’ not found in /home/gingko11/public_html/naturalremedymassage.com.au/wp-content/plugins/seo-by-rank-math/rank-math.php:344
Stack trace:
#0 /home/gingko11/public_html/naturalremedymassage.com.au/wp-includes/class-wp-hook.php(292): RankMath->init_rest_api(Object(WP_REST_Server))
#1 /home/gingko11/public_html/naturalremedymassage.com.au/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array)
#2 /home/gingko11/public_html/naturalremedymassage.com.au/wp-includes/plugin.php(484): WP_Hook->do_action(Array)
#3 /home/gingko11/public_html/naturalremedymassage.com.au/wp-includes/rest-api.php(521): do_action(‘rest_api_init’, Object(WP_REST_Server))
#4 /home/gingko11/public_html/naturalremedymassage.com.au/wp-includes/rest-api.php(479): rest_get_server()
#5 /home/gingko11/public_html/naturalremedymassage.com.au/wp-includes/rest-api.php(2816): rest_do_request(Object(WP_REST_Request))
#6 [internal function]: rest_preload_api_request(Array, ‘/’)
#7 /home/gingko11/pub

Actually no, the initial error persists SEO analysis –
what should the permissions be set to?

Ok. Try again. Now have access to public HTML folder ok?

Server / Hostname: 122.201.66.57
FTP Username: r*******@n**************************
FTP server: http://ftp.gingkohealth.com.au
FTP & explicit FTPS port: 21
PW rankmathseopro