Cronicle has authentication:
user/pass - admin/admin

Edit file '/home/abc/apps/cronicle/conf/config.json' to configure emails.

# If cronicle does not open, restart workspace
wrk kill

# If this didin't help, or if Cronicle stuck in "Waiting for master server...", execute
rm ./logs/cronicled.pid || true; cd /home/abc/apps/cronicle && . env/bin/activate; /home/abc/apps/cronicle/bin/storage-cli.js delete global/servers || true; /home/abc/apps/cronicle/bin/storage-cli.js delete global/users || true;

# and restart workspace
wrk kill