Well, however, I managed to fix it, I noticed that I had a problem with the configuration of the editor compared to the fonts I had added, I just solved it with the following code, so I'll leave it for someone to go through the same problem.
<script type="text/javascript">
tinymce.init({
selector: "textarea.editme",
theme: "modern",
plugins: [
"advlist autolink lists link image charmap print preview hr anchor pagebreak",
"searchreplace wordcount visualblocks visualchars code fullscreen",
"insertdatetime media nonbreaking save table contextmenu directionality",
"emoticons template paste textcolor colorpicker textpattern"
],
toolbar1: "insertfile undo redo | styleselect | bold italic | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | link image",
toolbar2: "print preview media | forecolor backcolor emoticons",
image_advtab: true,
templates: [
{title: 'Test template 1', content: 'Test 1'},
{title: 'Test template 2', content: 'Test 2'}
]
});
</script>
This will enable all editor functions // NOTE AND FOR EDITOR VERSION 4