Zotpress not showing anything in the article

I followed the installation instruction and the zotpress plugin is linked with my bibliography on my zotero app, thus I try to add citation in a article and nothing happen:

On gutenberg :

"simple citation"[zotpressInText item="{6368013:H6HHUTAY,21}"]

"second citation" [zotpressInText item="{6368013:ERU7QRRL,1}"]
[zotpressInTextBib style="id:ens-de-lyon-centre-d-ingenierie-documentaire" sort="ASC"]

On the published article :

<p>?&nbsp;simple citation&nbsp;?<span class="zp-InText-zp-ID--6368013-H6HHUTAY--wp1 zp-InText-Citation loading" rel="{ 'pages': '21', 'items': '{6368013:H6HHUTAY}', 'format': '(%a%, %d%, %p%)', 'brackets': '', 'etal': '', 'separator': '', 'and': '' }"></span></p>
<p>?&nbsp;second citation&nbsp;? <span class="zp-InText-zp-ID--6368013-ERU7QRRL--wp1 zp-InText-Citation loading" rel="{ 'pages': '1', 'items': '{6368013:ERU7QRRL}', 'format': '(%a%, %d%, %p%)', 'brackets': '', 'etal': '', 'separator': '', 'and': '' }"></span></p>

<div id="zp-InTextBib-zotpress-73726340a89776eefe975deb1064f528" class="zp-Zotpress zp-Zotpress-InTextBib wp-block-group zp-Post-1">
		<span class="ZP_ITEM_KEY" style="display: none;">{6368013:H6HHUTAY};{6368013:ERU7QRRL}</span>
		<span class="ZP_STYLE" style="display: none;">id:ens-de-lyon-centre-d-ingenierie-documentaire</span>
		<span class="ZP_SORTBY" style="display: none;">default</span>
		<span class="ZP_ORDER" style="display: none;">asc</span>
		<span class="ZP_TITLE" style="display: none;">no</span>
		<span class="ZP_SHOWIMAGE" style="display: none;"></span>
		<span class="ZP_SHOWTAGS" style="display: none;"></span>
		<span class="ZP_DOWNLOADABLE" style="display: none;"></span>
		<span class="ZP_NOTES" style="display: none;"></span>
		<span class="ZP_ABSTRACT" style="display: none;"></span>
		<span class="ZP_CITEABLE" style="display: none;"></span>
		<span class="ZP_TARGET" style="display: none;"></span>
		<span class="ZP_URLWRAP" style="display: none;"></span>
		<span class="ZP_FORCENUM" style="display: none;"></span>
		<span class="ZP_HIGHLIGHT" style="display: none;"></span>
		<span class="ZP_POSTID" style="display: none;">1</span><div class="zp-List loading">
<div class="zp-SEO-Content"></div><!-- .zp-zp-SEO-Content -->
</div><!-- .zp-List --></div><!--.zp-Zotpress-->

        </div>

Thanks in advance