If a charge doesn't match what you expected, first open the Invoices/Subscription tab, since the amount shown there is the real pending bill and there can be more than one invoice listed at once.
The most common surprise is a mid-cycle plan upgrade: when you move to a higher-priced plan partway through a billing cycle, Easync doesn't charge full price — it prorates the amount based on what you've already paid, the price difference between the plans, and the time left in the current cycle, which is why the total often isn't a clean "list price minus discount."
Issued invoices can't be deleted for this reason, as they're generated from that prorated calculation.
If a discount you were promised (e.g. for a review) isn't reflected, send support the review link and they'll apply it to the correct plan's invoice; for anything that still looks wrong after that, paste a screenshot of the Invoices tab and they'll check with the finance/tech team.