Wedding Day Timeline alternatives

I just came across this site on Product Hunt. I genuinely was so excited! I've been trying to do planning on spreadsheets which was just a visual nightmare for me.

I bought the full version because of the language option and to send bulk emails with guests names, but I regret. The email module doesn't work correctly. It didn't make our process smooth on the contrary it became much more difficult. Even the tracking overview was mistaken which led us to send each mail separately from our own mail address. Other parts look nice. I liked the design and useability.