in several countries its given for 1 to 3 years. But arriving in Thailand (and many other countries) you can use it (from day of arrival) for a maximum of 3 month. (Officially always in combination with a real and valid real driv license as it is just a translation)
Normal cheap post tarifs to Europe took only 1week to 10 days. EMS tracking crazy expensive (one letter costed me 1.200 bath) and took more than 5 weeks). Corona might be the cause