every border is same, not cancel wp n not void extension, stay inside, unless you fly out, it that regard IO thinks yu not come back, but in case person apply new work permit later on , that case will come up again.
from his post, no he did not do anything and his company as well. He can not do anything, if he lucky his company can fax the document to Mukdahan Immigration. If not return to local Labor and Immigration to do the correct process.
amazing, always when you think Thai Immigration can not surprise you anymore they pull one out. Actually great to open so early, should be allover the country.....
the cacellation must be done by Immigration , if done you can go to other places to apply. As other member already mentioned in Vientiane need booking 3-4weeks in advance. You can do also a quick border run for 30dasy and do a 30day extension.
most likely no, because you already registered your passport. I look often into the system and sometimes I get that message too, I log on a few minutes later and it is fine. You can also request a new password.