Will the issue causing clients to be unable to submit payment for email invoices ever be resolved?

My clients have been dealing with these errors for almost a year now, resulting in many delayed payments to me. The workarounds supplied by Quickbooks support do not work. I have told clients to clear their caches, try different browsers, click a direct link to the invoice instead of using the link from the email... nothing is working and I am frustrated. Please help me. I am just trying to run my business efficiently and Quickbooks is really holding me back.