Problems with the WordPress plugin, how to solve the problem?

Question

User identification

I have a problem, I create a bulletin board using a plugin and the plugin is not bad, but there is some problem due to which authorization does not work, I can’t find the reason for it, the developer claims that everything is fine, it does not reflect any errors on the site, however, there is the following in the console:

3(index):1 Unchecked runtime.lastError: The message port closed before a response was
received.
DevTools failed to load SourceMap: Could not load content for
chrome-extension://fheoggkfdfchfphceeifdbepaooicah... .
map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
DevTools failed to load SourceMap: Could not load content for
chrome-extension://fheoggkfdfchfphceeifdbepaooicah... :
HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
DevTools failed to load SourceMap: Could not load content for
https://xn--b1afajfmtlk6t.com.ua/wp-content/plugin... .
map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load SourceMap: Could not load content for
https://xn--b1afajfmtlk6t.com.ua/wp-content/plugin... .
js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load SourceMap: Could not load content for
https://xn--b1afajfmtlk6t.com.ua/wp-content/plugin...
g.min .js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE

Please tell me what to do?