Cannot use <a> tag for Double Opt-in now, last week woking find. How to solve it?

Hi everybody,
Last week my campaign working fine, I have a button (HTML button with < a > tag) and when click on that, open url to confirm. But now, It not woking
Last html code:
<a style="background: url(&quot;https://lapa.vn/images/why-flash.png&quot;) left 15px center / 20px no-repeat, linear-gradient(rgb(63, 195, 128), rgb(4, 147, 114)); padding: 20px 15px 20px 40px; border-radius: 5px; color: rgb(255, 255, 255); font-weight: 600; font-size: 18px; margin-bottom: 20px; text-decoration: none;" href="https://am517.infusionsoft.com/app/optIn/10/21ce3ca54f7a5b86/~EmailSent.Id~/~EmailSent.PartialHash~">CLICK ĐỂ NHẬN MÃ KÍCH HOẠT</a>
Now when click on the button in Email ~EmailSent.Id~/~EmailSent.PartialHash~ not convert to right string, so 404 Error
(Like this:https://am517.infusionsoft.com/app/optIn/10/21ce3ca54f7a5b86/~EmailSent.Id~/~EmailSent.PartialHash~)
I try:

  1. Remove format, only pure < a > tag with href but still error
  2. Put https://am517.infusionsoft.com/app/optIn/10/21ce3ca54f7a5b86/~EmailSent.Id~/~EmailSent.PartialHash~ at Email content then it woking

Thanks for your help

Hello, Is that new update of Infusionsoft? Now, we cannot use HTML Button Confirm OptIn…Is that right?

I have run into the same issue. But it looks like now the button block allows you to use the OptIn and OptOut merge code.

I now have confirmation buttons without hacks!

Hopefully it stays supported.