As of Friday 2020-02-28, Wassup has exceeded the maximum quota of geoip requests allowed by IpStack free API. You should start seeing pins again in March. I am working on a solution where you can sign up for your own API key instead of using Wassup’s shared key. This will be in the next revision of WassUp.
If you are comfortable with coding, you can start using your own API in WassUp by doing the following:
Login to your host server, go to the CPANEL database section, and start phpMyAdmin or another MySQL tool
select your site’s WordPress database if you have multiple databases
click on SQL tab and enter the following statement in the input area: UPDATE wp_wassup_meta SET meta_value='your_ipstack_key' WHERE meta_key='_geoip_apikey';