get_connections_status names what is connected. When several accounts are connected, pass the account id you mean. See Multiple accounts.
Google Analytics 4 explains on-site sessions and conversions. Klaviyo reads email lists, segments, and flows, and can create one campaign draft. Neither one is an ad account. See Google Analytics 4 and Klaviyo.
Creates on these platforms stay paused or wait for approval, with the exceptions each platform page names. A recommendation from a read does not change the live budget.