High sorry to hear this. I don't slab my coins so don't use any grading services but I do occasionally converse with french people. I use google translate to write my message's then copy and paste the translation into an email. You could try using that then fire an email off to them in French.
Hope this helps.
Stu.
When the sheet is produced you sometimes get material or air trapped inside the ingot as it cools. The metal crystallises at the inner surface of the inclusion. As it is rolled progressively thinner these inclusions can become exposed. What you have there is a couple of flaws arising from the trapped air.
Attached is an example where you can see the inclusion and crystallised metal to good effect.