Trying to add this YouTube video youtu.be/nBJN7DH83HA to a YouTube block on this pagehttps://j-mdemers.ca/en/causes/diabetes/...
I`ve adjusted the size of the YouTube video to match.
I've placed the YouTube block in a stack with a content block for the header description.

Don't understand why its not displaying the video in non-edit mode.
Tried with both IE and Firefox. Video doesn't appear either way.

This is my environment info:

# concrete5 Version
5.6.2.1

# concrete5 Packages
Advanced Slider (2.0.1), Content Slider (1.2.5), Easy Accordion (1.1), Easy tabs (1.7), Iframe (1.0), Internationalization (1.3), Language Manager (1.4.3), Pro Blog (12.0.0), Pro Events (10.3.2), Pro Forms (5.8.0), Pro Media (7.4.0), Pro News (5.0.2), Silence Theme (1.6.1), Socializer (5.6.0.0.5), tnSpacer (1.3), Translations Manager (1.3.1).

# concrete5 Overrides
blocks/guestbook, languages/site, languages/fr_FR

# Server Software
Apache

# Server API
cgi-fcgi

# PHP Version
5.3.28

# PHP Extensions
bcmath, bz2, calendar, cgi-fcgi, Core, ctype, curl, date, dom, ereg, exif, filter, ftp, gd, gettext, gmp, hash, iconv, imap, ionCube Loader, json, libxml, mbstring, mcrypt, mhash, mysql, mysqli, openssl, pcntl, pcre, PDO, pdo_mysql, pdo_sqlite, pgsql, posix, Reflection, session, shmop, SimpleXML, soap, sockets, SPL, sqlite3, standard, suhosin, tokenizer, xml, xmlreader, xmlrpc, xmlwriter, xsl, zip, zlib.

# PHP Settings
max_execution_time - 30
log_errors_max_len - 1024
max_file_uploads - 20
max_input_nesting_level - 64
max_input_time - -1
max_input_vars - 1000
memory_limit - 256M
post_max_size - 128M
safe_mode - Off
safe_mode_exec_dir - <i>no value</i>
safe_mode_gid - Off
safe_mode_include_dir - <i>no value</i>
sql.safe_mode - Off
upload_max_filesize - 128M
mysql.max_links - Unlimited
mysql.max_persistent - Unlimited
mysqli.max_links - Unlimited
mysqli.max_persistent - Unlimited
pcre.backtrack_limit - 1000000
pcre.recursion_limit - 100000
pgsql.max_links - Unlimited
pgsql.max_persistent - Unlimited
session.cache_limiter - nocache
session.gc_maxlifetime - 7200
soap.wsdl_cache_limit - 5
safe_mode_allowed_env_vars - PHP_
safe_mode_protected_env_vars - LD_LIBRARY_PATH
suhosin.cookie.max_array_depth - 50
suhosin.cookie.max_array_index_length - 64
suhosin.cookie.max_name_length - 64
suhosin.cookie.max_totalname_length - 256
suhosin.cookie.max_value_length - 10000
suhosin.cookie.max_vars - 100
suhosin.executor.include.max_traversal - 0
suhosin.executor.max_depth - 0
suhosin.get.max_array_depth - 50
suhosin.get.max_array_index_length - 64
suhosin.get.max_name_length - 64
suhosin.get.max_totalname_length - 256
suhosin.get.max_value_length - 512
suhosin.get.max_vars - 100
suhosin.log.phpscript.is_safe - Off
suhosin.memory_limit - 0
suhosin.post.max_array_depth - 50
suhosin.post.max_array_index_length - 64
suhosin.post.max_name_length - 64
suhosin.post.max_totalname_length - 256
suhosin.post.max_value_length - 1000000
suhosin.post.max_vars - 1000
suhosin.request.max_array_depth - 50
suhosin.request.max_array_index_length - 64
suhosin.request.max_totalname_length - 256
suhosin.request.max_value_length - 1000000
suhosin.request.max_varname_length - 64
suhosin.request.max_vars - 1000
suhosin.session.max_id_length - 128
suhosin.upload.max_uploads - 25