Llamazoom arrival bug

Product: The Sims Mobile
Platform:Android Phone
List the specific devices you play with (e.g. iPhone 6s Plus, Samsung Galaxy S7) Xiaomi redmi note 7
OS Version Jellybean
How often does the bug occur? Occasionally (10% - 49%)
Steps: How can we find the bug ourselves? See the time llamazoom truck arrival
What do you expect to see? First it there, ready to work on LZ but suddenly its gone and said rerurning in 3h
Connection Type Mobile
Please select your region Asia
Country Indonesia

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I login to my TSM, saw the LZ truck "im here" i check on parkside and then back to house. Suddenly i cant find my LZ truck and it said returning in 3h9m. It happened to me 3 times already.. please fix this bug i need to work on LZ to upgrade ecoworkshop