Hey there,

I am really sorry for the delay of this reply as it is a weekend for us here.

Thanks for reported, can you download my attached files and replace into this following file location and see how it goes.

JoomlaFolder/components/com_easysocial/themes/wireframe/polls/form/form.php
JoomlaFolder/components/com_easysocial/themes/wireframe/polls/form/story.php

Hello. I replaces file.
But when I edit this poll: https://crimson-land.ru/community/stream/item/48395
and erase date field > save (update) poll, it still display: "Expiration Date: 11.01.2030".

Because you have press save that polls before during edit last time, you can check my attached screenshot below.

For now I already help you update this expired date to update '0000-00-00 00:00:00' then it should work fine now.

Hello. Thanks. Seems editing databese is a little bit helped.
But users still confused about this:
1) create or edit poll
2) set date 30-04-2019
3) update / safe poll.
---
4) edit poll and erase date field
6) save poll
Result1: it's still display "This poll closes on 30.04.2019"
7) edit poll and set date 00-00-0000
8) update / safe poll.
Result2: it's still display "This poll closes on 30.04.2019"

So it's impossible to make poll unlimited date in prontend or backend? It's only possible by editing databese

Hello. Thanks. Seems editing databese is a little bit helped.
But users still confused about this:
1) create or edit poll
2) set date 30-04-2019
3) update / safe poll.
---
4) edit poll and erase date field
6) save poll
Result1: it's still display "This poll closes on 30.04.2019"
7) edit poll and set date 00-00-0000
8) update / safe poll.
Result2: it's still display "This poll closes on 30.04.2019"

So it's impossible to make poll unlimited date in prontend or backend? It's only possible by editing databese

Oh, I got your meaning now, this is the second bug and I will log into issue tracker.

Hello. I can see that the main issue is fixed but there is another one related.
To disable Expiration Date I need to clear field. But Calendar is hover it and it invisible. I used "Backspace" button. More at the video. Thanks.

I already pass to our designer to check your issue on the site because locally unable to replicate this.

We found out this in-line styling caused this issue, so that calendar unable to show the correct alignment, you can check my attached screenshot below.

Currently I am not sure which file added this inline-styling, if you also no ideas where this file located this, perhaps you can consult with your template provider regarding this and see how it goes.

Because need to update to this following css in order to show correctly the calendar alignment :

.main {

    position: relative;

    max-width: 1200px;

    margin: 0px auto 0;

    background: white;

    z-index: 2;

    top: 200px;

}