Hey this is a great progress from the @hivedev team , we have been waiting for this moment for a while since it was announced, i see most of us are enjoying the experience me included.
I have noticed something interesting while posting gif, its giving me an error below. no gif is uploading while photos are uploading just fine. I hope this will be fixed soon but all in all am enjoying the experience so far, great job team

I was able to upload gifs no problem.
Have you tried a different browser?
Do you have any extensions running that maybe causing a problem?
You using Hive.blog or Peakd.com? Try the opposite one.
Try again as you did before just to make sure it wasn't a one-time thing.
i did several times on mozilla and chrome same problem and am using hive.blog
Try using Peakd.com. It is 1000x better anyway.
I just confirmed I have same issue on Hive.blog (only with some gifs though). I will pass it along and look into it.
ok let me look at it, thanks alot for the help