First, stay calm. Try to use a different browser (internet explorer works pretty well). If you are using your cellphone, maybe change to a laptop or desktop.
If did not work, check the extension on your picture… usually is .jpeg. Also check the size, try to keep the archive less than 5MB (you can use online tools to resize it).
If none of this work, reply to the portal email explaining the situation to them.
I have just uploaded it using a different computer. Thank you!!
